English Grammar in use

Question 1

When do we use “I have done”?
Give an example.

Answer 1

We use “I have done” (Present Perfect) to talk about:

Past actions with a result in the present

Life experiences (without saying when)

Recent actions (especially with just, already, yet)

✅ Examples:

I’ve lost my keys. (I can’t find them now.)

She has visited Paris.

We’ve just finished lunch.

Have you done your homework yet?

Question 2

What does “How long have you (been)…” mean?
Give an example with and without “been.”

Answer 2

We use “How long have you…” to ask about something that started in the past and still happens now.

Without been → for stative verbs (like know, have, like)
✅ Example:
How long have you known her?
(I still know her now.)

With been → for actions/activities (Present Perfect Continuous)
✅ Example:
How long have you been working here?
(I started in the past and still work here.)

💡Keywords: for, since, still happening

Question 3

Front (Question side):
What’s the difference between “for,” “since,” and “how long”?
When do we use each one? Give examples.

Answer 3

Back (Answer side):
🔹 How long…? → used to ask about duration (question form)
✅ How long have you lived here?

🔹 For → used to express a period of time (answer to “how long”)
✅ I’ve lived here for 3 years.
⏳ Use with: 2 hours, a long time, 3 months, many years, etc.

🔹 Since → used to express the starting point of an action
✅ I’ve lived here since 2022.
📍 Use with: yesterday, last week, Monday, I was a child, etc.

Question 4

What is the Past Perfect Continuous (I had been doing)?
When do we use it? Give 1–2 examples.

Answer 4

Back (Answer side):
Definition:
The Past Perfect Continuous describes an action that was happening for a period of time before something else happened in the past.

Structure:
had been + verb-ing
(used for all subjects: I, you, he, she, it, we, they)

Examples:
✅ I had been waiting for 30 minutes when the bus finally arrived.
✅ She had been studying all night before the exam.

Keywords/Clues:

before

when

for

since

how long

Quick contrast:
Past Perfect (I had done) = completed action before something else
Past Perfect Continuous (I had been doing) = ongoing action before something else

Question 5

What does “I’m going to (do)” mean?
When do we use it? Give 1–2 examples.

Answer 5

Back (Answer side):
Definition:
We use “I’m going to (do)” to talk about:

Plans or intentions made before speaking

Predictions based on what we see now

Structure:
be (am/is/are) + going to + base verb
✅ I’m going to start a new project.
✅ It’s going to rain (look at those clouds!).

Examples:

She’s going to call him tonight.

We’re going to visit Grandma next week.

Look at that car! It’s going to crash!

Keywords:

tomorrow, next week, soon, later

look!, watch out!

Question 6

What’s the difference between “I will” and “I’m going to”?
When do we use each? Give examples.

Answer 6

🔹 “I will” → Decision made at the moment, promises, offers, predictions
✅ I’m tired. I’ll go to bed now. (decision now)
✅ Don’t worry, I’ll help you. (offer)
✅ I think it’ll be sunny tomorrow. (prediction)

🔹 “I’m going to” → Plans or intentions made before speaking, or predictions with evidence
✅ I’m going to visit my uncle next weekend. (already planned)
✅ Look at those clouds! It’s going to rain. (visible evidence)

📝 Summary:

“Will” = spontaneous / promises / predictions

“Going to” = pre-decided plans / clear evidence

Question 7

What’s the difference between “will be doing” and “will have done”?
When do we use each? Give examples.

Answer 7

🔹 “Will be doing” → Future Continuous
Used to describe an action that will be in progress at a specific time in the future
✅ This time tomorrow, I will be flying to Paris.
✅ Don’t call at 8. I will be having dinner.

🔹 “Will have done” → Future Perfect
Used to describe an action that will be completed before a certain time in the future
✅ By next month, I will have finished the course.
✅ She will have left by the time you arrive.

📝 Summary:

Will be doing = something happening at a future moment

Will have done = something finished before a future moment

🕓 Future Time Markers:

At this time tomorrow → use will be doing

By next week / by 5 PM → use will have done