1. (常州中考) Time waits for no man. But some people won't realize the importance of time ____ it's gone.
A. as
B. since
C. when
D. until

D [解析]考查连词辨析。句意:时间不等人。但是有些人直到失去了时间才意识到它的重要性。not...until...意为“直到……才……”。故选 D。

2. (南通中考) It is almost half a year ____ workers started building the underground Line 1 in Nantong.
A. when
B. since
C. before
D. after

B [解析]考查连词辨析。“It is+时间段+since+从句(一般过去时)”是固定句型,意为“自从……有……(时间段)了”。故选 B。

3. (无锡中考) —The local food may taste a bit strange.
—Well, ____ we are here, why not give it a try?
A. though
B. unless
C. since
D. because

C [解析]考查连词辨析。句意:——当地的食物也许尝起来有点奇怪。——嗯,既然我们到了这儿了,为什么不试一试呢? though 虽然;unless 除非,如果不;since 既然;because 因为。故选 C。

4. (昆明中考) ____ we continue to kill elephants for their ivory, we humans will lose them in the end.
A. If
B. Before
C. Until
D. Although

A [解析]考查连词辨析。句意:如果我们继续为了象牙捕杀大象,我们人类最终会失去它们。根据句意可知,空处应用 if 引导条件状语从句。故选 A。

5. —Let's go climbing if it ____ this Saturday.
—Good idea. But nobody knows if it ____.
A. is fine; rains
B. is fine; will rain
C. will be fine; rains
D. will be fine; will rain

B [解析]考查状语从句和宾语从句中动词的时态。第一个句子是 if 引导的条件状语从句,主句用了祈使句,从句用一般现在时;第二个句子是 if 引导的宾语从句,根据时间状语“this Saturday”可知,用一般将来时。故选 B。

6. (2024·镇江期末) “Post-2000s” (2000年后出生的人) have begun to amaze the world ____ they are very young.
A. if
B. since
C. before
D. although

D [解析]考查连词辨析。句意:虽然 00 后很年轻,但他们已经开始震惊世界。If 如果,是否;since 既然,自从;before 在……之前;although 虽然。根据空前后句之间的关系可知,表让步,需 although 来引导让步状语从句。故选 D。

7. (2023·遂宁中考) The city Zibo is ____ popular ____ many people want to go there for a trip this year.
A. so; that
B. such; that
C. too; to
D. very; that

A [解析]考查状语从句。句意为:淄博是一个如此受欢迎的城市,以至于今年许多人想去那里旅行。so...that 意为“如此……以至于……”,引导结果状语从句;such...that 意为“如此……以至于……”,引导结果状语从句;too...to...意为“太……而不能……”。very...that 形式错误,→so 后面用形容词或副词: such 后面接名词或名词性短语: to 后面用动词原形。没有这种用法。根据形容词“popular”和从句“many people want to go there for a trip this year”可知,此句需用 so...that 引导的结果状语从句。故选 A。

8. (2025·南通启东调研) Your education will be incomplete ____ you have practical life skills.
A. if
B. although
C. because
D. unless

D [解析]考查连词辨析。句意:除非你有实际的生活技能,否则你的教育是不完整的。根据句意可知，“受教育完整”的条件是“有实际的生活技能”，if 和 unless 引导条件状语从句。当某个条件为真时,后面的动作或结果会发生,用 if 引导条件状语从句。当某个条件不成立时,后面的动作或结果才会发生,用 unless 引导条件状语从句。unless 在意义上相当于“if...not...”。故选 D。
归纳总结 if 如果,引导条件状语从句;although 虽然,尽管,引导让步状语从句;because 因为,引导原因状语从句;unless 除非,如果不,引导条件状语从句。

9. We practise playing volleyball harder ____ we can do better in the next match.
A. in order to
B. as soon as
C. as well
D. so that

D [解析]考查连词短语辨析。句意:我们更加努力地练习打排球,这样我们才能在下一场比赛中做得更好。in order to 为了;as soon as 一……就……;as well 也;so that 以便。根据“we can do better in the next match”可知,此处引导目的状语从句,所以填 so that。故选 D。

Ⅱ. 句型转换
根据要求完成下列句子,每空一词。
1. We went out when the rain stopped. (改为同义句)
We didn't ____ ____ ____ the rain stopped.
2. This tree has been dead for three years. (改为同义句)
It has been three years ____ this tree ____.
3. When he received my email, he made a reply in no time. (改为同义句)
He made a reply to my email ____ ____ ____ he received it.
4. While Jim was attending college, he made friends with some foreign boys. (改为同义句)
Jim made friends with some foreign boys ____ ____ college.
5. We didn't get bored during the journey because there were shows on the ship. (对画线部分提问)
____ ____ you get bored during the journey?

1. go out until 2. since;died 3. as soon as
4. while attending 5. Why didn't