- Sự phối hợp giữa động từ trong mệnh đề chính và mệnh đề trạng ngữ chỉ thời gian:

a. TLĐ + until / when / as soon as + HTĐ

Ex: I will wait here until she comes back.
b. TLĐ + after + HTHT
Ex: He will go home after he has finished his work.
c3. While / when / as + QKTD, QKĐ
Ex: While I was going to school, I met my friend.
d. QKĐ + while / when / as + QKTD
Ex: It started to rain while the boys were playing football.
e. QKTD + while + QKTD
Ex: Last night,I was watching T.V while my sister wasplaying games.
f. HTHT + since + QKĐ
Ex: I have worked here since I graduated.
g. TLHT + by / by the time + HTĐ
Ex: He will have left by the time you arrive.
h. QKHT + by the time / before + QKĐ
Ex: He had left by the time I came.
i. After + QKHT, QKĐ
Ex: After I had finished my homework, I went to bed.
II. Exercises:
1.Ex 1: Complete sentenses with adverbs clauses of time
1- Bob will come soon. .......................... Bob comes, we will see him.
2- Linda is going to leave soon. ................... she leaves, she is going to finish her work.
3- We’ll be able to leave for the airport ..................... the taxi arrives.
4- I’ll wait here .................they come back.
5- I’ll go to bed .................... I finish my homework.
6- I’ll go to bed ......................I have finished my homework.
7- She said goodbye ......................she left.
8- I started school ....................I was six.
9- We stayed there .....................we finished work.
10- My mother went home ...................she finished work at the office.
11- My mother went home ........................... she finished work at the office.
12. The telephone rang ...................... we were having dinner.
13- ...................... I was walking home, it began to rain.
14- I was cooking dinner ................ my husband was reading a book.
15- He was talking on the phone ...................... I arrived.
16- She got a job ................ she had graduated from university.
17- She got a job .................... she had graduated from university.
18- She had left ........................ he came.
19- ................................... he arrived, we had already finished work.
2.Ex 2: I. Bài tập mệnh đề trạng ngữ chỉ thời gian
1. I will call you before I ________ over.
A. comeB. will comeC. will be comingD. came
2. After she graduates, she ________ a job.
A. gotB. will getC. had gotD. get
3. When I _________ him tomorrow, I will ask him.
A. sawB. have seenC. will seeD. see
4. As soon as it _________ raining, we will leave.
A. stopsB. stopC. had stoppedD. stopped
5. By the time he comes, we will have already __________.
A. leaveB. leavingC. leftD. leaves
6. Whenever I ________ her, I say hello.
A. seeB. will seeC. will have seenD. saw
7. The next time I go to New York, I am going ________ a ballet.
A. seeingB. seeC. sawD. to see
8. I will never speak to him again so long as I _______.
A. livesB. will liveC. am livingD. live
9. By the time Bill ____ to bed tomorrow, he will have had a full day and will be ready for sleep.
A. had goneB. will goC. goesD. went
10. As soon as I finish my report, I will call you and we ________ out for dinner.
A. wentB. will goC. will have goneD. go
11. By the time I return to my country, I _________ away from home for more than three years.
A. would beB. will have beenC. will beD. am
12. After he _______ breakfast tomorrow, he will get ready to go to work.
A. will have hadB. hasC. will be havingD. have
13. As soon as he finishes dinner, he _______ the children for a work to a nearby playground.
A. will takeB. takesC. will be takingD. took
14. When Bill gets home, his children ___________ in the yard.
A. playedB. will playC. will be playingD. play
15. He will work at his desk until he ______ to another meeting in the middle of the afternoon.
A. wentB. goC. will goD. goes
16. She ________ lunch by the time we arrived.
A. finishedB. has finishedC. had finishedD. finishing
17. Bob will come soon. When Bob _______, we will see him.
A. comeB. will comeC. will be comingD. comes
18. I will get home at 5:30. After I get home, I ________ dinner.
A. will haveB. will be havingC. hadD. have
19. As soon as the taxi _________, we will be able to leave for the airport.
A. arrivesB. arriveC. will arriveD. arrived
20. I will go to bed after I _________my work.
A. finishB. finishedC. will finishD. finishes
21. I ________ here when you arrive tomorrow.
A. amB. had beenC. could beD. will be
22. I am going to wait right here until Jessica ________.
A. comesB. will have comeC. is comingD. came
23. As soon as the war ________over, there will be great joy throughout the land.
A. areB. will beC. isD. would be
24. Right now the tide is low, but when the tide comes in, the ship ______ the harbor.
A. leftB. will leaveC. will have leftD. leave
25. I am going to start making dinner before my wife ______ home from work today.
A. getB. getsC. will getD. got
Đáp án:
3.Ex 3: Put the verbs in brackets into correct tense
1. How long do you want me to heat the oil? –heat it till it (begin) to smoke.
2. How long are you going to stay here? - I’m going to stay here until my brother (finish) his
exams.
3. When I (get) to the cinema, the film (start).
4. By the time you (read) this book, your meal will get cold.
5. Please tell me how to get to the hospital? - Go till you (come) to a square with a statue in the
middle; then turn left and you (find) it on your right.
6. I (read) book while my sister (do) her homework.
7. When he (come), I (watch) a football match on TV.
8. When I (walk) down the street, I (see) her.
9. We will go with him as soon as we (finish) the task.
10. I (learn) English since I (be) six years old.
Ex4. Exercises:Give the correct form of verbs in simple future and simple present.
1: We (think) ____________ this mountain-climbing is very dangerous.
2: My brother (like) ____________ collecting superman so much.
3: I (take) ____________ a lot of clothes when I (go) ____________ on holidays.
4: My son (like)______ drawing very much. His hobby is (paint) ____________.
5: Lan’s father says when he (retire) ____________, he (go) ____________ back to his village to
do the gardening.
6: ____________ you (like) (make) ____________gamer in her free time?
7: My sister (promise) ____________ that she (give) ____________ me a smartphone on my
birthday.
8: Jack says he loves swimming but he (not/ continue) ____________ this hobby from next year.
9: My uncle (play) ____________ the piano twice a week.
10: Don’t worry. I (sing) ____________ with you next Sunday.
11: I __________ (have) History twice a week.
12: Linh __________ (visit) the dentist next Tuesday.
13: Our house is old. We __________ (buy) a new one.
14: I like music. I always __________ (listen) to music before going to bed.
1 5: Trang __________ (go) to the bale center every week.
16: My brother__________ (love) animals. He __________ (be) a cat when he grows up.
17: My father __________ (work) in a museum.
18: The sky is grey. We think it __________ (rain)
19: Khanh __________ (play) computer games every day.
20: It often __________ (rain) in summer in this country.
21: I _________ (meet) with my boyfriend everyday. Next month we ________ (go) to the sea.
22: Kim and Thanh are in love. They __________ (get married) next year.
Ex 5: Choose the best answer.
1: I’m told Trang is sick. I hope she ________ better again.
A. will feel B. feels C. is feeling D.doesn’t feel
2: ______ she ______ to school every morning?
A. Does … walk B.Do … walks C.Will… walks D.Is … walking
3: You needn’t wear your glove. It ________ warm today.
A. be B. won’t be C.will be D.is
4: People needs oxygen to live. We ________ without oxygen.
 A. lives B.live C.don’t live D. doesn’t live
5: I ________ swimming because it’s relax and good exercise.
A.likes B. are liking C.will like D.like
Ex 6: Fill in the blank with Future Simple or Present Simple
1.If you ______ (to leave) now, you ______ (to catch) the bus.
2.She ______ (to take) a photo as soon as she ______ (to find) her camera.
3.Eric ______ (to lend) you his power bank if you ______ (to ask) him.
4.We ______ (to wait) until Alex ______ (to get) here.
5.If it ______ (to rain), we ______ (to wear) a raincoat.
6.If they ______ (to book) the hotel today, they ______ (to pay) only $50.
7.Lisa ______ (to be) very happy if we ______ (to buy) her some cupcakes.
8.He ______ (to phone) you after he ______ (to finish) his dinner.
9.If it ______ (to be) cold outside, I______ (to read) a book at home.
10.They ______ (to go) shopping before they ______ (to go) on holiday.
Ex7: Rewrite these sentences using Future Simple or Present Simple tense

2. The taxi (arrives / will arrive) at 11.30. ⇒ ______________________________.

1. When (does / will) the last race begin ?⇒ ________________________ ?

3. I (will be back / am back) as soon as possible.⇒ ______________________________.

4. We (are visiting / visit) the National Gallery some time soon.⇒_______________________.

6. I (start / will start) a diet after the holidays. ⇒______________________________.

5. You (ask / will ask) the secretary for the forms to fill in.⇒______________________________.

8. The end-of-term test (is / will be) on the 22nd of June. ⇒______________________________.
7. How (do / will) I switch this off ?⇒______________________________?

9. We (have / will have) a biology lesson on Mondays.⇒ ______________________________.

10. Number 15 bus (won’t / doesn’t) stop far from the cathedral.⇒ _________________________.

12. Where (do / will) candidates go for the results ? ⇒ ______________________________?

11. I (come / will come) for tea.⇒ ______________________________.

14. What time (does / will) the lecture begin? ⇒ ______________________________.

13. I (play / am playing) the second part next week.⇒ ______________________________.

15. I (fill / will fill) in the form for you.⇒ ______________________________.