2026年外研版九年级中考 条件状语从句专项讲义

条件状语从句专项讲解练习

一、定义：由  if （如果）、 unless （除非=if not）引导，用来表示主句动作发生的条件，可置于句首（逗号隔开主句）或句尾。

 

二、条件状语从句的分类如下：

三、易混点区分：if 引导条件状语从句 vs 宾语从句

三、          条件状语从句专项练习

Ⅰ. 用所给动词的适当形式填空

1. If you _______________(heat) ice, it __________________(turn) into water.

2. We _________________ (go) hiking if it __________________ (not rain) this Sunday.

3. You can _______________ (speak) English fluently if you practice (practice) every day.

4. If I __________________ (be) you, I __________________ (accept) that invitation.

5. She ____________________ (pass) the exam if she _____________________ (study) harder last term.

6. Unless he __________________ (finish) his homework, he ______________________(not play) computer games.

7. If it _______________________ (snow) tomorrow, we ________________________ (cancel) the sports meeting.

8. As long as you ___________________ (keep) trying, you _______________________(succeed) sooner or later.

9. If they ______________________(take) the early bus, they ___________________________ (not miss) the train.

10. If a plant__________________________(not get) enough sunlight, it __________________ (die) slowly.

 

Ⅱ. 单项选择（易错区分）

1. — I don’t know if it _______ tomorrow.

— If it _______, we won’t go for a picnic.

A. will rain; will rain            B. will rain; rains        C. rains; will rain            D. rains; rains

2. If I _______ you, I _______ more attention to English grammar.

A. am; will pay            B. were; would pay         C. were; will pay            D. am; would pay

3. You will fail the exam unless you _______ hard from now on.

A. work            B. worked               C. will work                 D. have worked

4. If she _______ here yesterday, she _______ us with the task.

A. was; would help         B. was; would have helped         C. had been; would help   

D. had been; would have helped

5. — Shall we go swimming if it _______ fine this weekend?

— Sounds great!

A. will be        B. was          C. is          D. were

6. I wonder if she _______ to the concert. If she _______, I’ll tell you at once.

A. comes; comes           B. will come; comes       C. comes; will come       D. will come; will come

7. If it _______ for the snow, we _______ the mountain yesterday.

A. were not; could have climbed     B. were not; could climb       C. had not been; could have climbed  D. had not been; could climb

8. As long as you _______ the instructions, you _______ any danger.

A. follow; won’t face    B. follow; don’t face     C. will follow; won’t face    D. will follow; don’t face

9. If he _______ the teacher’s advice, he _______ in the exam.

A. took; wouldn’t fail     B. takes; wouldn’t fail     C. had taken; wouldn’t have failed   

D. had taken; wouldn’t fail

10. You _______ get the prize if you _______ the game.

A. will; win    B. will; will win     C. would; win     D. would; won

 

Ⅲ. 句型转换

1. If you don’t hurry up, you will miss the bus.

→ _________________________________________________________(用unless替换)

2. If I were free, I would go shopping with you.

→__________________________________________________________（省略if的虚拟结构）

3. If you work hard, you will make progress.

→ _______________________________________________________________（祈使句+and句型）

4. If she had seen the film, she would have talked about it.

→ __________________________________________________________________（省略if的虚拟结构）

5. You can’t watch TV if you don’t finish your homework.

→ __________________________________________________________________（用unless替换）

6. If it doesn’t rain, we will have a picnic.

→ ___________________________________________________________________（用unless替换）

7. If I had enough money, I would buy a new phone.

→ _____________________________________________________________________（调整语序）

8. If you don’t take exercise, you will be unhealthy.

→ ______________________________________________________________________（祈使句+or句型）