Home / Học ngữ pháp TOEIC – Unit 24: when I do & when I’ve done – If & when – Học Hay

Học ngữ pháp TOEIC – Unit 24: when I do & when I’ve done – If & when – Học Hay

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Ngữ pháp tiếng anh luyện thi TOEIC – Unit 24: when I do & when I’ve done – If & when – HocHay

1. When I do & when I’ve done

– Hãy xem ví dụ sau:

 

Ví dụ:

  • We’ll go out when it stops raining. (not when it will stop)
  • When you are here again, you must come and see us. (not When you will be)
  • Don’t forget to lock the door when you go out. (not will go)

– Đằng sau while / before / after / as soon as / until, ta cũng dùng thì hiện tại đơn:

  • What are you going to do while I’m away? (not while I will be)
  • Before you go, there’s something I want to ask you.
  • Wait here until I come back. or … till I come back.

 

– Ta có thể dùng hiện tại hoàn thành (have done) sau when / after / until / as soon as:

  • Can I have the newspaper when you’ve finished with it?
  • Don’t say anything while Ian is here. Wait until he has gone.

– Chúng ta dùng present perfect để diễn tả một hành động được hoàn thành trước một hành động khác. 2 hành động KHÔNG xảy ra đồng thời.

  • When I’ve phoned Kate, we can go out.
    (= first I’ll phone Kate and after that we can go out)

– Có thể dùng hiện tại hoàn thành hoặc hiện tại đơn:

  • I’ll come as soon as I finish. or I’ll come as soon as I’ve finished.
  • You’ll feel better after you have something to eat. or You’ll feel better after you’ve had something to eat.

 

2. if and when

– Sau if, chúng ta thường sử dụng thì hiện tại đơn (if I do / if I see etc.) mang ý nghĩa tương lai:

  • I’ll be angry if it happens again. (not if it will happen)
  • Hurry up! If we don’t hurry, we’ll be late.

– Ta dùng if (không phải là when) cho những việc có khả năng xảy ra (hoặc không xảy ra):

  • If it is raining this evening, I won’t go out. (not when it is raining)
  • Don’t worry if I’m late tonight. (not when I’m late)
  • If they don’t come soon, I’m not going to wait for them.

– Ta sử dụng when cho những việc chắc chắn sẽ xảy ra. Hãy xem thử ví dụ dưới đây:

  • I might go out later. (có khả năng) If I go out, I’ll get some bread.
    I’m going out later. (chắc chắn) When I go out, I’ll get some bread.

Bài tập Ngữ pháp tiếng anh luyện thi TOEIC – Unit 24: when I do & when I’ve done – If & when – HocHay

A Which is correct?

1 Don’t forget to lock the door when you go out / you’ll go out. (you go out is correct)

2 As soon as we get any more information, we let / we’ll let you know.

3 I want to get to the cinema before the film starts / will start.

4 Don’t drive through a red light. Wait until it changes / it will change to green.

5 Sarah will be here soon. I make / I’ll make some coffee when she comes.

6 I’m 20 now. I wonder where I’ll be when I’m 40 / I’ll be 40.

I wait / I’ll wait for you until you’re ready, but don’t be long.

8 Oliver is five years old. He wants to be a TV presenter when he grows up / he’ll grow up.

9 We could meet for coffee tomorrow morning if you’re / you will be free.

10 If the weather is / will be nice tomorrow, we’re going to the beach.

11 Vicky is / will be very disappointed if she doesn’t get a place at university.

12 You’ll feel better after you’ve had / you’ll have something to eat.

B Complete the sentences using the verbs in brackets. Use will/won’t or the present (see/plays/are etc.).

1 When you are (you / be) here again, you must come and see us.

2 I want to see Sophie before …………………..(she / go) away next week.

3 Call me when …………………..(you / know) what time you’re going to get here.

4 There’s no need to hurry. …………………..(I / wait) for you until …………………..(you / be) ready.

5 I’m going out for about an hour. …………………..(you / still / be) here when …………………..(I / get) back?

6 I think everything will be fine, but if …………………..(there / be) any problems, …………………..(I / let) you know, OK?

7 Kate looks completely different now. …………………..(you / not / recognise) her when …………………..(you / see) her again.

8 I’m going to be away for a few days. If …………………..(you / need) to contact me while (I / be) away, you can call me.

C Read the situations and complete the sentences.

1 You and a friend want to go out, but it’s raining hard. You don’t want to get wet.

You say: Let’s wait until it stops raining .

2 You’re visiting a friend. It’s going to get dark soon, and you want to leave before that.

You ask: I’d better go now before ………………………….

3 You want to sell your car. Mark is interested in buying it, but he hasn’t decided yet.

You ask: Let me know as soon as………………………… .

4 Your friends are going to Hong Kong soon. You want to know where they’re going to stay.

You ask: Where are you going to stay when …………………………?

5 The traffic is bad in your town, but they are going to build a new road.

You say: I think things will be better when they ………………………….

6 Someone you know has been very rude to you. You want her to apologise.

You say (to someone else): I won’t speak to her until ………………………….

D Put in when or if.

1 Don’t worry if I’m late tonight.

2 Be careful. You’ll hurt yourself ………….you fall.

3 I’m going shopping. ………….you want anything, I can get it for you.

4 I’m going away for a few days. I’ll call you ………….I get back.

5 ………….I don’t see you tomorrow, when will I see you again?

6 I’m watching a programme on TV right now. ………….it finishes, I’m going to bed.

7 We can eat at home or, ………….you prefer, we can go to a restaurant.

8 I hope Sarah can come to the party. It will be a shame ………….she can’t come

Đáp án

A

2 we’ll let

3 starts

4 it changes

5 I’ll make

6 I’m 40

7 I’ll wait

8 he grows up

9 you’re

10 is

11 will be

12 you’ve had

B

2 she goes

3 you know

4 I’ll wait / I will wait … you’re / you are

5 Will you still be … I get

6 there are … I’ll let / I will let

7 You won’t recognise / You will not recognise … you see

8 you need … I’m / I am

C

2 it gets dark

3 you decide or you’ve decided / you have decided

4 you’re in Hong Kong / you go to Hong Kong

5 build the new road or ’ve built the new road / have built the new road

6 she apologises or she’s apologised / she has apologised

D

2 if

3 If

4 when

5 If

6 When

7 if

8 if

 

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