九年级英语条件状语从句单选题40题

九年级英语条件状语从句单选题40题
1.If it rains tomorrow, we ____ stay at home.
A.will
B.would
C.should
D.must
答案：A。

if 引导的条件状语从句，遵循“主将从现”原则，从句用一般现在时，主句用一般将来时，所以选A。

B 项would 用于过去将来时；C 项should 表示应该；D 项must 表示必须，均不符合语境。

2.If I have time, I ____ help you with your homework.
A.will
B.would
C.should
D.must
答案：A。

同样是“主将从现”，有时间的话就会帮你做作业，用will。

B 项would 用于过去将来时或虚拟语气；C 项should 应该；
D 项must 必须，不符合题意。

3.If you study hard, you ____ get good grades.
A.will
B.would
C.should
D.must
答案：A。

“主将从现”，努力学习就会取得好成绩。

B 项would 不对；C 项should 应该；D 项must 必须，不合语境。

4.If she ____ to the party, she will have a great time.
A.goes
B.will go
C.went
D.would go
答案：A。

“主将从现”，从句用一般现在时，she 是第三人称单数，所以用goes。

B 项will go 是将来时；C 项went 是过去时；D 项would go 用于过去将来时或虚拟语气。

5.If we ____ late for class, the teacher will be angry.
A.are
B.will be
C.were
D.would be
答案：A。

“主将从现”，be late for 迟到，从句用一般现在时。

B 项will be 将来时；C 项were 过去时；D 项would be 过去将来时或虚拟语气。

6.If he ____ his homework, he can go out to play.
A.finishes
B.will finish
C.finished
D.would finish
答案：A。

“主将从现”，完成作业就能出去玩，he 是第三人称单数，finish 用finishes。

B 项will finish 将来时；C 项finished 过去时；D 项would finish 过去将来时或虚拟语气。

7.If they ____ here on time, we can start the meeting.
A.arrive
B.will arrive
C.arrived
D.would arrive
答案：A。

“主将从现”，他们按时到这里，我们就能开会。

arrive 用一般现在时。

B 项will arrive 将来时；C 项arrived 过去时；D 项would arrive 过去将来时或虚拟语气。

8.If you ____ me, I will be very happy.
A.call
B.will call
C.called
D.would call
答案：A。

“主将从现”，你给我打电话我会很高兴。

call 用一般现在时。

B 项will call 将来时；C 项called 过去时；D 项would call 过去将来时或虚拟语气。

9.If it ____ sunny tomorrow, we will go for a picnic.
A.is
B.will be
C.was
D.would be
答案：A。

“主将从现”，天气晴朗就去野餐，用一般现在时is。

B 项will be 将来时；
C 项was 过去时；
D 项would be 过去将来时或虚拟语气。

10.If we ____ careful, we may make mistakes.
A.are not
B.will not be
C.were not
D.would not be
答案：A。

“主将从现”，如果不小心就会犯错。

be careful 小心，用否定形式are not。

B 项will not be 将来时；C 项were not 过去时；D 项would not be 过去将来时或虚拟语气。

11.If we don't take action to protect the environment,our planet will be in danger. We must act now unless we want to see a disaster.
A.unless we want to see a disaster.
B.unless we don't want to see a disaster.
C.unless we wanted to see a disaster.
D.unless we wouldn't want to see a disaster.
答案：A。

本题考查unless 引导的条件状语从句的用法。

unless
意为“除非”，相当于if...not。

根据句意“我们现在必须采取行动，除非我们想看到一场灾难”，A 选项符合逻辑。

B 选项双重否定表肯定，意思错误。

C 选项时态错误。

D 选项时态和否定错误。

12.We won't have clean air to breathe unless we stop polluting.
A.unless we stop polluting.
B.unless we don't stop polluting.
C.unless we stopped polluting.
D.unless we wouldn't stop polluting.
答案：A。

unless 引导条件状语从句，遵循“主将从现”原则。

A 选项符合，意为“除非我们停止污染”。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

13.The earth will become uninhabitable unless we take measures to reduce carbon emissions.
A.unless we take measures to reduce carbon emissions.
B.unless we don't take measures to reduce carbon emissions.
C.unless we took measures to reduce carbon emissions.
D.unless we wouldn't take measures to reduce carbon emissions.
答案：A。

unless 引导的条件状语从句，“主将从现”。

A 选项“除非我们采取措施减少碳排放”正确。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

14.We can't save the endangered species unless we work together.
A.unless we work together.
B.unless we don't work together.
C.unless we worked together.
D.unless we wouldn't work together.
答案：A。

unless 条件状语从句，“主将从现”。

A 选项“除非我们共同努力”正确。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

15.The future of our children is at stake unless we educate them about environmental protection.
A.unless we educate them about environmental protection.
B.unless we don't educate them about environmental protection.
C.unless we educated them about environmental protection.
D.unless we wouldn't educate them about environmental protection.
答案：A。

“主将从现”原则。

A 选项“除非我们教育他们有关环境保护”正确。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

16.We won't have sustainable development unless we change our consumption habits.
A.unless we change our consumption habits.
B.unless we don't change our consumption habits.
C.unless we changed our consumption habits.
D.unless we wouldn't change our consumption habits.
答案：A。

“主将从现”。

A 选项“除非我们改变消费习惯”正确。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

17.The wildlife will continue to disappear unless we protect their habitats.
A.unless we protect their habitats.
B.unless we don't protect their habitats.
C.unless we protected their habitats.
D.unless we wouldn't protect their habitats.
答案：A。

“主将从现”。

A 选项“除非我们保护它们的栖息地”正确。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

18.We can't achieve a green world unless everyone does their part.
A.unless everyone does their part.
B.unless everyone doesn't do their part.
C.unless everyone did their part.
D.unless everyone wouldn't do their part.
答案：A。

“主将从现”。

A 选项“除非每个人都尽自己的一份力”正确。

B 选项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

19.The water resources will be depleted unless we conserve water.
A.unless we conserve water.
B.unless we don't conserve water.
C.unless we conserved water.
D.unless we wouldn't conserve water.
答案：A。

“主将从现”。

A 选项“除非我们节约用水”正确。

B 选
项意思错误。

C 选项时态错误。

D 选项时态和否定错误。

20.We won't have a healthy planet unless we reduce waste.
A.unless we reduce waste.
B.unless
21.If you study hard, you will pass the exam.
Provided that you study hard, you will pass the exam.
As long as you study hard, you will pass the exam.
答案：这三个句子意思相同，都表示“如果你努力学习，你就会通过考试”。

“provided that”“as long as”和“if”在引导条件状语从句时，语气较为接近，都表示一种假设条件下的结果。

在语义上，它们都强调只要满足某种条件，就会有相应的结果。

条件状语从句通常由引导词引导，后面跟一个完整的句子。

22.We can go on a picnic as long as it doesn't rain.
Provided that it doesn't rain, we can go on a picnic.
If it doesn't rain, we can go on a picnic.
答案：这三个句子意思相同，都表示“只要不下雨，我们就可以去野餐”。

三个引导词在语义和语气上都较为相似，都在表达一种假设的条件和对应的结果。

条件状语从句的结构特点是引导词后面跟一个完整的句子，表示条件。

23.She will help you as long as you ask nicely.
Provided that you ask nicely, she will help you.
If you ask nicely, she will help you.
答案：这三个句子意思一样，即“只要你礼貌地请求，她就会帮助你”。

这三个引导词在引导条件状语从句时，都表示在特定条件下会有相应的结果。

条件状语从句的结构是引导词加一个完整的句子。

24.You can borrow my book provided that you return it on time.
As long as you return it on time, you can borrow my book.
If you return it on time, you can borrow my book.
答案：三个句子都表示“只要你按时归还，你就可以借我的书”。

三个引导词在语义和语气上相似，引导条件状语从句，强调条件和结果的关系。

条件状语从句结构为引导词加完整句子。

25.We will have a party as long as everyone is free.
Provided that everyone is free, we will have a party.
If everyone is free, we will have a party.
答案：这三个句子意思相同，都是“只要大家都有空，我们就举办派对”。

三个引导词在引导条件状语从句时，表达的意思和语气相近，都是假设满足某个条件就会有相应结果。

条件状语从句结构为引导词加完整句子。

26.He can join the club provided that he pays the membership fee.
As long as he pays the membership fee, he can join the club.
If he pays the membership fee, he can join the club.
答案：这三个句子意思一样，即“只要他支付会员费，他就可以加入俱乐部”。

三个引导词在引导条件状语从句时，语义和语气相似，强调条件和结果的关系。

条件状语从句结构是引导词加完整句子。

27.You will succeed as long as you don't give up.
Provided that you don't give up, you will succeed.
If you don't give up, you will succeed.
答案：三个句子意思相同，都是“只要你不放弃，你就会成功”。

三个引导词在引导条件状语从句时，表达的意思和语气相近，都表示在特定条件下会有相应结果。

条件状语从句结构为引导词加完整句子。

28.We can finish the project on time provided that we work hard.
As long as we work hard, we can finish the project on time.
If we work hard, we can finish the project on time.
答案：这三个句子意思一样，即“只要我们努力工作，我们就能按时完成项目”。

三个引导词在引导条件状语从句时，语义和语气相似，强调条件和结果的关系。

条件状语从句结构为引导词加完整句子。

29.She will be happy as long as you are with her.
Provided that you are with her, she will be happy.
If you are with her, she will be happy.
答案：三个句子意思相同，都是“只要你和她在一起，她就会开心”。

三个引导词在引导条件状语从句时，表达的意思和语气相近，都表示在特定条件下会有相应结果。

条件状语从句结构为引导词加完整句子。

30.You can go out provided that you finish your homework.
As long as you finish your homework, you can go out.
If you finish your homework, you can go out.
31.If it rains tomorrow, we ________ stay at home.
A.will
B.would
C.should
D.must
答案：A。

本题考查if 引导的条件状语从句，遵循“主将从现”原则，从句用一般现在时，主句用一般将来时。

32.Unless you study hard, you ________ pass the exam.
A.won't
B.wouldn't
C.don't
D.didn't
答案：A。

unless 相当于if...not，遵循“主将从现”原则，从句用一般现在时，主句用一般将来时的否定形式。

33.If I had enough time, I ________ read more books.
A.will
B.would
C.should
D.must
答案：B。

本题考查虚拟语气，对现在的虚拟，从句用一般过去时，主句用“would/should/could/might+动词原形”。

34.Provided that you finish your homework, you ________ go out and
play.
A.can
B.may
C.must
D.should
答案：A。

provided that 引导条件状语从句，意为“假如，如果”，主句用can 表示能够。

35.As long as you are honest, you ________ have many friends.
A.will
B.would
C.should
D.must
答案：A。

as long as 引导条件状语从句，遵循“主将从现”原则。

36.Suppose you work hard, you ________ achieve your dream.
A.will
B.would
C.should
D.must
答案：A。

suppose 引导条件状语从句，遵循“主将从现”原则。

37.On condition that you apologize, I ________ forgive you.
A.will
B.would
C.should
D.must
答案：A。

on condition that 引导条件状语从句，遵循“主将从现”原则。

38.If only I ________ a better memory.
A.have
B.had
C.will have
D.would have
答案：B。

if only 引导虚拟语气，对现在的虚拟，用一般过去时。

39.Even if you are tired, you ________ keep going.
A.must
B.should
C.have to
D.need to
答案：C。

even if 引导让步状语从句，此处表示客观上必须继续，用have to。

40.In case it rains, we ________ take an umbrella.
A.should
B.must
C.need
D.may
答案：A。

in case 引导条件状语从句，意为“万一，如果”，用should 表示应该。