English Grammar

MỆNH ĐỀ WISH
Wish that + subject+ past tense: regret about a present situation
Ex: He wishes he knew the address.
Wish that + subject + past perfect: regret about a past situation
Ex: I wish that I hadn’t spent so much money.
Wish + subject + would: dissatisfaction with the present and a wish for change in the future; interest in the subject’s
Ex: I wish he would answer my letter. (I have been waiting for the answer for a long time.)
I wish he would write more often.
IF-1: FUTURE POSSIBILITY
If clause Main clause
Simple present simple future
simple present
Ex: If it rains, we’ll not go out.
If you heat the water at 100 degrees, it boils.
IF 2- PRESENT UNREAL
If clause main clause
Simple past ….. would do…
Ex: If I were you, I would choose studying in this school.
If they studied hard, they would be good students.
IF 3- PAST UNREAL
If clause Main clause
Past perfect ….would have done …
Ex: If you had told me about that, I would have finished the report yesterday.
If he had learned carefully, he would have passed his exam.
IF CLAUSE- INVERSION
(đảo ngữ của câu điều kiện)
Đảo ngữ dùng để diễn tả điều có thể xảy ra nhưng nằm ngoài mong muốn của người nói. (dạng 1)
Ex: Should you have any complaints, contact us immediately.
= If you have any complaints, contact us immediately.
(CONT)
Dạng 3:
Had we known you were there, we would have written you a letter.
Had she found the right buyer, she would have sold the house.
AS IF, AS THOUGH
(như thể là)
Ý nghĩa hiện tại: simple past
Ý nghĩa quá khứ: past perfect
He always behaves as if he were the president.
He breathed as though he had had a long walk.