Lesson 6
Perfect and Continuous Tenses: Since/For, Background Actions and Earlier Past
This lesson groups five rules that students commonly confuse because they look similar on the surface. Put the events on a timeline before choosing the tense. Work through the examples slowly once; speed comes after the pattern is clear.
What you will learn
- Understand and apply: Use present perfect with 'since' and 'for' for continuing situations.
- Understand and apply: Finished-time markers normally require the simple past.
- Understand and apply: Use past continuous for an action in progress at a past moment.
- Understand and apply: Use past perfect for the earlier of two relevant past actions.
- Understand and apply: Use 'will' and 'going to' according to meaning.
For every rule: spot the trigger → identify the grammatical relationship → apply the form → check meaning.
Before you start
Try the warm-up without checking the rule. The purpose is to expose the instinct you currently use, not to score marks.
Which sentence follows the target grammar pattern?
A. She has studied here for six months.
B. She studied here for six months and still studies here.
Answer: A. Use since for the starting point and for for the duration of an action or state continuing to the present.
Rule 1 · G026
Use present perfect with 'since' and 'for' for continuing situations
Use since for the starting point and for for the duration of an action or state continuing to the present.
Correct example
She has studied here for six months.
Incorrect example
She studied here for six months and still studies here.
Interpretation
Use since for the starting point and for for the duration of an action or state continuing to the present. In a test, do not memorise this as an isolated sentence. Put the events on a timeline before choosing the tense. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Tense questions are really timeline questions; understanding sequence prevents guesswork.
Common exam trap
A familiar time word makes one tense look attractive even though the relationship between the two events points elsewhere.
How to spot it
Mark the time words and order the events. Choose the tense only after the timeline is clear.
3-step solving method
- Mark every time expression.
- Order the events on a timeline.
- Choose the tense that expresses that relationship.
Why the incorrect example fails
The target structure requires this rule: Use since for the starting point and for for the duration of an action or state continuing to the present. In the incorrect version, the repair is to add “has”; replace “months and still studies here.” with “months.”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
More than one tense can be grammatically possible in English; exam questions normally give a time relationship that makes one choice clearly better.
No finished past clock-time with present perfect.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “She studied here for six months and still studies here.”
Reveal quick check answer
Apply Use present perfect with 'since' and 'for' for continuing situations: Use since for the starting point and for for the duration of an action or state continuing to the present.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “She studied here for six months and still studies here.”
Rule 2 · G027
Finished-time markers normally require the simple past
Words such as yesterday, last year and in 2024 normally place the action in a finished past period.
Correct example
We met the faculty last week.
Incorrect example
We have met the faculty last week.
Interpretation
Words such as yesterday, last year and in 2024 normally place the action in a finished past period. In a test, do not memorise this as an isolated sentence. Put the events on a timeline before choosing the tense. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Tense questions are really timeline questions; understanding sequence prevents guesswork.
Common exam trap
A familiar time word makes one tense look attractive even though the relationship between the two events points elsewhere.
How to spot it
Mark the time words and order the events. Choose the tense only after the timeline is clear.
3-step solving method
- Mark every time expression.
- Order the events on a timeline.
- Choose the tense that expresses that relationship.
Why the incorrect example fails
The target structure requires this rule: Words such as yesterday, last year and in 2024 normally place the action in a finished past period. In the incorrect version, the repair is to remove “have”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
More than one tense can be grammatically possible in English; exam questions normally give a time relationship that makes one choice clearly better.
Words such as yesterday, last year and in 2024 normally place the action in a finished past period.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “We have met the faculty last week.”
Reveal quick check answer
Apply Finished-time markers normally require the simple past: Words such as yesterday, last year and in 2024 normally place the action in a finished past period.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “We have met the faculty last week.”
Rule 3 · G028
Use past continuous for an action in progress at a past moment
Use was/were + -ing for background activity or an action continuing when another event occurred.
Correct example
I was reading when the lights went out.
Incorrect example
I read when the lights were going out.
Interpretation
Use was/were + -ing for background activity or an action continuing when another event occurred. In a test, do not memorise this as an isolated sentence. Put the events on a timeline before choosing the tense. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Tense questions are really timeline questions; understanding sequence prevents guesswork.
Common exam trap
A familiar time word makes one tense look attractive even though the relationship between the two events points elsewhere.
How to spot it
Mark the time words and order the events. Choose the tense only after the timeline is clear.
3-step solving method
- Mark every time expression.
- Order the events on a timeline.
- Choose the tense that expresses that relationship.
Why the incorrect example fails
The target structure requires this rule: Use was/were + -ing for background activity or an action continuing when another event occurred. In the incorrect version, the repair is to replace “read” with “was reading”; replace “were going” with “went”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
More than one tense can be grammatically possible in English; exam questions normally give a time relationship that makes one choice clearly better.
BE + -ing.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “I read when the lights were going out.”
Reveal quick check answer
Apply Use past continuous for an action in progress at a past moment: Use was/were + -ing for background activity or an action continuing when another event occurred.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “I read when the lights were going out.”
Rule 4 · G029
Use past perfect for the earlier of two relevant past actions
Use had + past participle when you need to make clear that one past event happened before another.
Correct example
By the time we arrived, the lecture had started.
Incorrect example
By the time we arrived, the lecture has started.
Interpretation
Use had + past participle when you need to make clear that one past event happened before another. In a test, do not memorise this as an isolated sentence. Put the events on a timeline before choosing the tense. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Tense questions are really timeline questions; understanding sequence prevents guesswork.
Common exam trap
A familiar time word makes one tense look attractive even though the relationship between the two events points elsewhere.
How to spot it
Mark the time words and order the events. Choose the tense only after the timeline is clear.
3-step solving method
- Mark every time expression.
- Order the events on a timeline.
- Choose the tense that expresses that relationship.
Why the incorrect example fails
The target structure requires this rule: Use had + past participle when you need to make clear that one past event happened before another. In the incorrect version, the repair is to replace “has” with “had”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
More than one tense can be grammatically possible in English; exam questions normally give a time relationship that makes one choice clearly better.
Past perfect points to the earlier past.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “By the time we arrived, the lecture has started.”
Reveal quick check answer
Apply Use past perfect for the earlier of two relevant past actions: Use had + past participle when you need to make clear that one past event happened before another.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound
Why is this sentence problematic in the target rule? “By the time we arrived, the lecture has started.”
Rule 5 · G030
Use 'will' and 'going to' according to meaning
Will often suits spontaneous decisions or neutral predictions; be going to often suits prior plans or predictions based on present evidence.
Correct example
Look at those clouds; it is going to rain.
Incorrect example
Look at those clouds; it will going to rain.
Interpretation
Will often suits spontaneous decisions or neutral predictions; be going to often suits prior plans or predictions based on present evidence. In a test, do not memorise this as an isolated sentence. Put the events on a timeline before choosing the tense. The correct example shows the pattern in context; compare it directly with the incorrect version and identify the exact word that must change.
Why it matters
Tense questions are really timeline questions; understanding sequence prevents guesswork.
Common exam trap
A familiar time word makes one tense look attractive even though the relationship between the two events points elsewhere.
How to spot it
Mark the time words and order the events. Choose the tense only after the timeline is clear.
3-step solving method
- Mark every time expression.
- Order the events on a timeline.
- Choose the tense that expresses that relationship.
Why the incorrect example fails
The target structure requires this rule: Will often suits spontaneous decisions or neutral predictions; be going to often suits prior plans or predictions based on present evidence. In the incorrect version, the repair is to replace “will” with “is”. That is the exact edit a student should be able to justify in an error-spotting question.
Nuance and memory hook
More than one tense can be grammatically possible in English; exam questions normally give a time relationship that makes one choice clearly better.
Will often suits spontaneous decisions or neutral predictions; be going to often suits prior plans or predictions based on present evidence.
Quick check
Without relying on what 'sounds right', explain which part of this sentence violates the rule: “Look at those clouds; it will going to rain.”
Reveal quick check answer
Apply Use 'will' and 'going to' according to meaning: Will often suits spontaneous decisions or neutral predictions; be going to often suits prior plans or predictions based on present evidence.
Practice questions
Apply the rule in context
Which sentence is the better choice in standard exam-oriented English?
Explain the error rather than guessing by sound