Nhớ câu thần chú : Unless = if not chỉ dùng cho câu điền kiện loại 1
1) Điều Kiện loại 1:
Công thức : If + S + V(s/es), S + will//may/can + Vo .
-->Đảo ngữ :Should + S + Vo, S + will//may/can + Vo
Ex: If you brother contacts the travel agent earlier, he may get a better fare
Đảo ngữ: _____ your brother contact the travel agent earlier, he may get a better fare
A. should B. If C. unless D. Had
+ Đa số hs chọn B, vì nghĩ câu dk loại 1, những ko nhớ đảo ngữ. Làm thì phải phân tích kỹ nhé, đừng thấy Bộ giáo dục cho đề dễ ùi cuời mũm mĩm Nếu chọn B. thì contact sao ko chia thì, vì your brother là danh từ số ít, phải "contacts" mới đúng. Đảo ngữ Should thì V ở dạng nguyên mẫu. . Cho nên chọn A
2) Câu ĐK Loại 2.
- CT: If + S + V(2/ed/were), S + would/could/might + Vo
- Đảo ngữ: Were + S + O, S + would/could + Vo
Ex: If I were you, I wouldn't by that expensive car
Đảo ngữ: ____ I you, I wouldnt' buy that expensive car.
A. Had B. Were C.Should. D be.
--> Đảo ngữ loại 2 , chọn B
Ex: If she let the opportunities go by, she _____
A.had regretted C will regretted
B would regretted. D would have regrettted
+ Chắc chắn có đứa chọn C, A và D sai ngữ pháp. Đáp án là B nhé. vì Let là Quá Khứ Đơn. Let --> Let --> Let. Nếu chọn C thì Let phải thêm "s" nhé.
3) Câu điều Kiện loại 3:
- CT: If + S + Had + V(3/ed), S + would have + V(3/ed)
- Đảo ngữ: Had + S + V(3/ed), S + would have + V(3/ed)
Ex: If you had studied harder, you would have passed the exam
- Đ/N: Had you studied harder, you would have passed the exam
4) Câu điều kiện hỗn hợp.
Ex. If It had not rained yesterday, the road ______ slippery now
A. Would not be B would have not been
C. will be D be
+ Chọn A nhé, vì "now" là dấu hiệu ko có thật hiện tại. đừng thấy câu ĐK loại 3 mà chọn B nhé.
:)Ex: If she had arrived there yesterday, she can come here tomorrow
5) Without = If there were no
Ex: Without water, we could n`t live.
---> If there were no water, we couldn`t live
6 But for = If it were not for
Ex: But for your held, I would have been in trouble
--> If it were not for your help, I would have been in trouble
7) Dạng viết lại câu đổi từ câu có Or, otherwise sang dùng if :
Dạng này thường có cấu trúc là câu mệnh lệnh + or, otherwise + S will …
Ex: Hurry up, or you will be late
--> If you don`t hurry, you will be late
- Các cụm từ thay thế cho If. As soon as = ngay khi, Provided/providing that = miễn là. in case = phòng khi. As long as = miễn là.
** BÀI TẬP TỰ LUẬN**
1. She
doesn’t live in London
because she doesn’t know anyone there
ð She would live in London if she Knew someone there.
2. I
can’t live in the country because I can’t find a job there
ð If I found a job there, I could live in the country
3. I
don’t have a spare ticket. I can’t take you to the concert
ð If
I had a spare ticket, I could take you to the concert.
4. Carol
didn’t answer the phone because she was studying..
ð If
Carol had not been studying, she would have answered the phone
6. Rita
is exhausted today because she didn’t get any sleep last night.
ð If
Rita had got enough sleep last night, she would not be exhausted today
7. He
never polishes his shoes, so he never looks smart
ð If
he polished his shoes, he would look smart
8. Go
right now or you’ll be late for the train.
If you do not go right now, you will be late for the train
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