Ⅱ. 用所给词的适当形式填空
1. If Jim ______ (come), we will have a good time.
2. My baby sister never ______ (cry) unless she is hungry.
3. We ______ (be) late unless we speed up.
4. You ______ (not hear) anything unless you listen carefully.
5. You ______ (miss) the bus unless you hurry up.

1. comes 2. cries 3. will be 4. won't hear
5. will miss

1. (2024·无锡宜兴二模)You will surely realize your dream of being a great scientist ______ you give it up halfway.
A. unless
B. since
C. until
D. whether

A [解析]考查连词辨析。句意:除非你半途而废,否则你一定会实现当大科学家的梦想。unless 除非,如果不; since 自从; until 直到……才; whether 是否。分析题干,空后句子是空前句子的否定条件,表示“如果不半途而废,梦想就会实现”,应用 unless 引导条件状语从句。故选 A。

2. I have no idea if he ______ a film with me.
—He will go to the cinema if he ______.
A. sees; will be free
B. sees; is free
C. will see; is free
D. will see; will be free

C [解析]考查宾语从句和状语从句。句意:——我不知道他是否会和我一起看电影。——如果他有空,他会去看电影的。第一空是 if 引导的宾语从句,根据句意应用一般将来时;第二空是 if 引导的条件状语从句,用一般现在时表示将来。故选 C。

3. —Do you think your teacher will answer my phone?
—I’m afraid not, Mum. He ______ the phone unless he ______ the phone number.
A. won’t answer; knows
B. won’t answer; doesn’t know
C. never answers; won’t know
D. will answer; knows

A [解析]考查时态辨析。在含有 unless 和 if 引导的条件状语从句的主从复合句中,如果主句用一般将来时,从句用一般现在时表示将来,即遵循“主将从现”原则。故选 A。

4. —Will you go to Tom’s birthday party ______ you are free?
—No, ______ I’m invited.
A. if; if
B. unless; if
C. unless; unless
D. if; unless

D [解析]考查连词辨析。句意:——如果你有空,你会去参加汤姆的生日聚会吗? ——不,除非我被邀请。第一空用 if 引导条件状语从句;第二空用 unless 引导条件状语从句。故选 D。

5. (2024·南京玄武区一模)______ you always compare yourself with others, you’ll never
feel good enough.
A. If
B. Unless
C. Though
D. Because

A [解析]考查连词辨析。句意:如果你总是拿自己和别人比较,你永远不会觉得自己足够好。if 如果; unless 除非; though 尽管; because 因为。根据“you always compare yourself with others, you'll never feel good enough”可知,前句是后句的条件,应用 if 引导条件状语从句。故选 A。

Ⅳ. 翻译句子
1. 如果妈妈允许,我会去参加你的聚会。
______
2. 他经常会去看望他奶奶,除非太忙。
______
3. 熊如果处境危险会攻击人吗？
______
4. 有多少老虎生活在野外？
______
5. 我们将有机会看到电视节目如何录制吗？
______

1. If my mother allows, I will go to your party.
2. Unless he is too busy, he often goes to visit his grandmother.
3. If a bear is in danger, will it attack people?
4. How many tigers live in the wild?
5. Shall we have a chance to see how a TV programme is recorded?

Ⅴ. 句型转换
1. If we don’t keep working hard, we won’t be successful. (改为同义句)
We won’t be successful ______ we ______ working hard.
2. The teacher won’t let you in if you wear jeans. (对画线部分提问)
______ ______ ______ if you wear jeans?
3. Work harder, or you will fail the exam. (改成含有 if 引导的从句的复合句)
______ you don’t work harder, you ______ fail the exam.
4. You won’t feel sad about it unless you love animals. (改为同义句)
You won’t feel sad about it ______ you ______ not an animal-lover.
5. (2023·无锡调研)Read the questions carefully, or you’ll make some mistakes. (改为同义句)
You’ll make some mistakes ______ you read the questions carefully.

1. unless; keep 2. What will happen 3. If; will
4. if; are 5. unless