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Lý thuyết: Dạng viết lại câu dùng if
Cách nhận dạng: dựa vào các liên từ nối giữa 2 vế câu như: so, that’s why, because.
Những mẹo làm bài nhanh trong trường không hiểu nghĩa hoàn toàn:
+ Nếu cả 2 vế trong câu sử dụng liên từ đều chia ở thì tương lai đơn thì ta dùng cấu trúc câu điều kiện loại 1 (chú ý không cần phủ định mệnh đề trong câu)
+ Nếu một vế thì hiện tại còn một vế ở thì tương lai hoặc hiện tại thì ta vẫn sử dung if loại 2 (chú ý lúc này ta cần phủ định lại mệnh đề trong câu)
+ Nếu 2 vế có một thì quá khứ thì ta dùng câu điều kiện loại 3
+ Trong câu có các liên từ nếu phủ định rồi thi khi viết cấu trúc if ta bỏ “not” và ngược lại
+ Xuất hiện từ because ở vế nào ta thay thế bằng từ “if” ở vế đó.
+ Nếu xuất hiện các từ như: so hoặc that’s why thì ta để từ “if” ở vế còn lại trong câu.
Một số ví dụ minh họa
E.g: I did not buy that because it was not discounted.
→ If it had discounted, I would have bought.
E.g: She doesn’t like spicy food, so she doesn’t eat any food at the party.
→ If she liked spicy food, she would eat any food at the party.
Bài tập
I. Viết lại câu
1. Keep silent or you’ll wake the baby up. → If you don't keep silent, you will wake the baby up. 2. Stop talking or you won’t understand the lesson. → If…………………………………….....….……. 3. I don’t know her number, so I don’t ring her up. →If…………………………………….....….…….. 4. I don’t know the answer, so I can’t tell you. → If …………………………………………….……….. 5. We got lost because we didn’t have a map. → If …………………………………….……..…….…… 6. Susan felt sick because she ate four cream cakes. →……………………………………………..……
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8. He lost his job because he was late every day. →………………………………………………...…… 9. Peter is fat because he eats so many chips. →……………………………………………………...….. 10. Robert got a bad cough because he started smoking cigarettes. →………………………………..…..
II. Chọn đáp án đúng. 1. I would have visited you before if there _____ quite a lot of people in your house. A. hadn't B. hadn't been C. wouldn't be D. wasn't 2. If you had caught the bus, you _____ late for work. A. wouldn't have been B. would have been C. wouldn’t be D. would be 3. If I _____, I would express my feelings. A. were asked B. would ask C. had been asked D. asked 4. If _____ as I told her, she would have succeeded. A. she has done B. she had done C. she does D. she did 5. Will you be angry if I _____ your pocket dictionary? A. stole B. have stolen C. were to steal D. steal 6. You made a mistake by telling her a lie. It _____ better if you _____ to her. A. would have been/ hadn't lied B. would be/ didn't lie C. will be/ don't lie D. would be/ hadn't lied 7. John would be taking a great risk if he _____ his money in that business. A. would invest B. invested C. had invested D. invests 8. She wouldn't have given them all that money if we _____ her to. A. wouldn’t advise B. won't advise
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C. hadn't advised D. didn't advise 9. If the tree hadn't been so high, he _____ it up to take his kite down. A. could have climbed B. climb C. is climbing D. climbed 10. If the wall weren't so high, he _____ it up to take his ball down. A. climbed B. could climb C. is climbing D. climb 11. If I _____ her phone number, I _____ her last night A. had known/ could have phoned B. knew/ would have phoned C. know/ can phone D. knew/ could phone 12. If he ______ the truth, the police wouldn’t arrest him. A. tells B. told C. had told D. would tell 13. If you press that button what _____? A. would happen B. would have happened C. will happen D. happen 14. She says if she _____ that the traffic lights were red she _____. A. had realized/ would stop B. realized/ could have stopped C. has realized/ stopped D. had realized/ would have stopped 15. I am very thin. I think, if I _____ smoking, I might get fat. A. stop B. had stopped C. will stop D. stopped 16. If I _____ that yesterday, I _____ them. A. had discovered/ would inform B. had discovered/ would have informed\ C. had discovered/ could inform D. discovered/ can …
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