A. hospital B. afternoon C. suitable D. family

BEFORE diễn tả hành động xảy ra xong trước khi có hành động khác tới Trong TƯƠNG LAI: AFTER + S + V (hiện tại hoàn thành), S + V (hiện tại đơn) Eg: After she has done her homework, she goes out for a walk. Trong QUÁ KHỨ: BEFORE + S + V (quá khứ đơn), S + V (quá khứ hoàn thành) Eg: Before she went to bed, she had locked all the doors. Trong TƯƠNG LAI: BEFORE + S + V (hiện tại đơn), S + V (tương lai hoàn thành) Eg: Hurry up or the film will have ended before we go to the movie.

UNTIL/ TILL diễn tả nghĩa “cho tới khi” S + V (tương lai đơn)/ V(bare)/DON’T + V(bare) + UNTIL/TILL + S + V (hiện tại đơn/hiện tại hoàn thành) Eg: I will wait for you until it is possible. Wait here until I come back.

BÀI TẬP ÁP DỤNG Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions TLĐ + until / when / as soon as + HTĐ I will wait here until she comes back. TLĐ + after + HTHT He will go home after he has finished his work. While / when / as + QKTD, QKĐ QKĐ + while / when / as + QKTD While I was going to school, I met my friend. It started to rain while the boys were playing football. QKTD + while + QKTD Last night, I was doing my homework while my sister was playing games.

HTHT + since + QKĐ I have worked here since I graduated.

TLHT + by / by the time + HTĐ He will have left by the time you arrive.

QKHT + by the time / before + QKĐ

He had left by the time I came. After + QKHT, QKĐ After I had finished my homework, I went to bed. 1. Jane________law at Harvard for four years now. A. is studying B. has been studying C. studies D. studied 2. This time tomorrow________on the beach sunbathing and drinking freshly squeezed fruit juice! A. I’ll have been lying B. I will lie C. I will be lying D. I will have lain 3. We________for three hours and we are very tired. A. waited B. have been waiting C. wait D. had waited 4. She________for hours. That’s why her eyes are red now. A. cried B. has been crying C. was crying D. has cried 5. The host will read the questions _________. A. until the participants will be fully prepared B. after the participants had been fully prepared C. after the participants are fully prepared D. before the participants was fully prepared 6. He will take the dog out for a walk ________________. A. as soon as he finishes B. when I was finishing dinner C. until I finished dinner D. shall have finished 7. By the year 2021, 6% of all US jobs by robots, report says. A. will eliminate B. will have been eliminated C. will be eliminating D. will have eliminated 8. She will take management training course _______ A. right after the epidemic has been controlled B. as soon as the epidemic was controlled C. when the epidemic had been controlled D. until the epidemic will be controlled 9. He will take the dog out for a walk ________________. A. as soon as he finishes B. when I was finishing dinner C. until I finished dinner D. shall have finished