五年级英语条件句构造高级分析判断练习题50题(答案解析)

五年级英语条件句构造高级分析判断练习题50题(答案解
析)
1.If it is sunny tomorrow, we _____ go for a picnic.
A.will
B.would
C.should
D.can
答案解析：A。

if 引导的真实条件句，主句用一般将来时，从句用一般现在时。

B 选项would 用于虚拟语气；C 选项should 表示应该；D 选项can 表示能够。

本题根据条件句语法规则，主句应该用will 表示将来。

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

if 引导的真实条件句，主句用一般将来时。

B 选项would 用于虚拟语气；C 选项should 表示应该；D 选项must 表示必须。

本题主句应用will。

3.If she _____ hard, she will get good grades.
A.study
B.studies
C.will study
D.would study
答案解析：B。

if 引导的真实条件句，从句用一般现在时，主语she 是第三人称单数，动词用studies。

A 选项study 用于主语不是第三人称单数时；C 选项will study 和D 选项would study 用于不同的语气和时态，不适合这里的真实条件句。

4.If it rains tomorrow, we _____ stay at home.
A.will
B.would
C.should
D.must
答案解析：A。

if 引导的真实条件句，主句用一般将来时。

B 选项would 用于虚拟语气；C 选项should 表示应该；D 选项must 表示必须。

本题主句应用will。

5.If he _____ early, he can catch the bus.
A.gets up
B.will get up
C.would get up
D.should get up
答案解析：A。

if 引导的真实条件句，从句用一般现在时，主语he 是第三人称单数，动词用gets up。

B 选项will get up 和C 选项would get up 用于不同的语气和时态，不适合这里的真实条件句；D
选项should get up 表示应该起床，不符合本题语境。

6.If we _____ careful, we won't make mistakes.
A.are
B.will be
C.would be
D.should be
答案解析：A。

if 引导的真实条件句，从句用一般现在时。

B 选项will be 和C 选项would be 用于不同的语气和时态，不适合这里的真实条件句；D 选项should be 表示应该，不符合本题语境。

7.If they _____ on time, they won't be late for school.
e
B.will come
C.would come
D.should come
答案解析：A。

if 引导的真实条件句，从句用一般现在时。

B 选项will come 和C 选项would come 用于不同的语气和时态，不适合这里的真实条件句；D 选项should come 表示应该来，不符合本题语境。

8.If I _____ a book, I will read it.
A.have
B.will have
C.would have
D.should have
答案解析：A。

if 引导的真实条件句，从句用一般现在时。

B 选项will have 和C 选项would have 用于不同的语气和时态，不适合这里的真实条件句；D 选项should have 表示应该有，不符合本题语境。

9.If she _____ a pen, she can write down her ideas.
A.has
B.will have
C.would have
D.should have
答案解析：A。

if 引导的真实条件句，从句用一般现在时。

B 选项will have 和C 选项would have 用于不同的语气和时态，不适合这里的真实条件句；D 选项should have 表示应该有，不符合本题语境。

10.If we _____ to the park, we can play games.
A.go
B.will go
C.would go
D.should go
答案解析：A。

if 引导的真实条件句，从句用一般现在时。

B 选项will go 和 C 选项would go 用于不同的语气和时态，不适合这里的真实条件句；D 选项should go 表示应该去，不符合本题语境。

11.If you don't study hard, you won't pass the exam. The same meaning can be expressed as: You won't pass the exam unless you ____ hard.
A.study
B.studies
C.studying
D.studied
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，主语是you，谓语动词用原形study。

B 选项是第三人称单数形式；C 选项是现在分词；D 选项是过去式，都不符合。

12.The party won't start unless everyone ____ here on time.
A.is
B.are
C.be
D.will be
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，everyone 作主语，谓语动词用单数is。

B 选项是复数形式；C 选项be 动词原形一般用于虚拟语气等特殊情况；D 选项will be 是将来时，不符合要求。

13.She won't go to the park unless it ____ sunny tomorrow.
A.is
B.will be
C.was
D.were
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，it 作主语，be 动词用is。

B 选项will be 是将来时；C 选项was 是过去式；D 选项were 是虚拟语气或过去式，都不符合。

14.We can't go swimming unless the water ____ warm enough.
A.is
B.will be
C.was
D.were
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，the water 作主语，be 动词用is。

B 选项will be 是将来时；
C 选项was 是过去式；
D 选项were 是虚拟语气或过去式，都不符合。

15.He won't play basketball unless he ____ his homework first.
A.finishes
B.finish
C.finished
D.will finish
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，he 作主语，谓语动词用finishes。

B 选项finish 是原形，不符合主语是第三人称单数的情况；C 选项finished 是过去式；D 选项
will finish 是将来时，都不符合。

16.They won't go camping unless they ____ enough food.
A.have
B.has
C.having
D.had
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，they 作主语，谓语动词用have。

B 选项has 是第三人称单数形式；C 选项having 是现在分词；D 选项had 是过去式，都不符合。

17.She won't buy the dress unless it ____ on sale.
A.is
B.will be
C.was
D.were
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，it 作主语，be 动词用is。

B 选项will be 是将来时；C 选项was 是过去式；D 选项were 是虚拟语气或过去式，都不符合。

18.We won't go to the concert unless we ____ tickets.
A.have
B.has
C.having
D.had
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，we 作主语，谓语动词用have。

B 选项has 是第三人称单数形式；C 选项having 是现在分词；D 选项had 是过去式，都不符合。

19.He won't watch TV unless he ____ his room.
A.cleans
B.clean
C.cleaned
D.will clean
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，he 作主语，谓语动词用cleans。

B 选项clean 是原形，不符合主语是第三人称单数的情况；C 选项cleaned 是过去式；D 选项will clean 是将来时，都不符合。

20.They won't go to the zoo unless it ____ a sunny day.
A.is
B.will be
C.was
D.were
答案解析：A。

unless 引导的条件状语从句，要用一般现在时表将来，it 作主语，be 动词用is。

B 选项will be 是将来时；C 选项was 是过去式；D 选项were 是虚拟语气或过去式，都不符合。

21.If you study hard, you will pass the exam. The same meaning can be expressed as: You will pass the exam provided that you study hard.
As long as you study hard, you will pass the exam.
The two sentences mean the same thing.
答案解析：以上两句意思相同，都表示“只要你努力学习，你就会通过考试”。

provided that 和as long as 都引导条件状语从句，表示“只要”。

22.We can go on a picnic provided that it doesn't rain.
As long as it doesn't rain, we can go on a picnic.
If it doesn't rain, we can go on a picnic.
答案解析：这三句意思一样，都表达“只要不下雨，我们就可以去野餐”。

provided that 和as long as 与if 引导条件句时相似，都表示条件，但provided that 更加正式一些。

23.She will help you provided that you ask nicely.
As long as you ask nicely, she will help you.
Unless you ask nicely, she won't help you.
答案解析：前两句意思是“只要你礼貌地请求，她就会帮助你”。

第三句意思是“除非你礼貌地请求，否则她不会帮助你”。

provided that 和as long as 引导肯定条件，unless 引导否定条件。

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 don't return it on time, I won't lend it to you again.
答案解析：前两句意思为“只要你按时归还，你就可以借我的书”。

第三句意思是“如果你不按时归还，我就不会再借给你了”。

provided that 和as long as 强调在某个条件下会有某种结果，if...not 表示否定条件下的结果。

25.He will come to the party provided that he is invited.
As long as he is invited, he will come to the party.
Even if he is not invited, he might come.
答案解析：前两句意思是“只要他被邀请，他就会来参加聚会”。

第三句意思是“即使他没有被邀请，他也可能来”。

provided that 和as long as 表示明确的条件，even if 表示让步。

26.We can finish the project on time provided that everyone works hard.
As long as everyone works hard, we can finish the project on time.
If some people don't work hard, we might not finish on time.
答案解析：前两句意思是“只要每个人都努力工作，我们就能按时完成项目”。

第三句意思是“如果有些人不努力工作，我们可能就不能按时完成”。

provided that 和as long as 引导积极条件，if...not 表示消极情况。

27.She can go on the trip provided that she saves enough money.
As long as she saves enough money, she can go on the trip.
If she doesn't save enough money, she can't go.
答案解析：前两句意思是“只要她存够钱，她就可以去旅行”。

第
三句意思是“如果她没有存够钱，她就不能去”。

provided that 和as long as 强调条件满足时的结果，if...not 表示条件不满足时的结果。

28.You will get a good grade provided that you study carefully.
As long as you study carefully, you will get a good grade.
If you don't study carefully, you won't get a good grade.
答案解析：前两句意思是“只要你认真学习，你就会取得好成绩”。

第三句意思是“如果你不认真学习，你就不会取得好成绩”。

provided that 和as long as 引导积极条件，if...not 表示消极条件。

29.We can go swimming provided that the weather is nice.
As long as the weather is nice, we can go swimming.
If the weather is bad, we can't go swimming.
答案解析：前两句意思是“只要天气好，我们就可以去游泳”。

第三句意思是“如果天气不好，我们就不能去游泳”。

provided that 和as long as 表示积极条件，if...not 表示消极条件。

30.He will succeed provided that he keeps trying.
As long as he keeps trying, he will succeed.
If he gives up, he won't succeed.
答案解析：前两句意思是“只要他继续努力，他就会成功”。

第三句意思是“如果他放弃，他就不会成功”。

provided that 和as long as 引导积极条件，if...not 表示消极条件。

31.If I had a magic wand, I would make everyone happy. But I don't have one, so I can't.
A.would make
B.will make
C.made
D.make
答案解析：A。

本题考查虚拟条件句。

前半句是对现在情况的虚拟，用“if+过去式，主语+would+动词原形”结构，所以选A。

32.If it rains tomorrow, we will stay at home. But if it doesn't rain, we will go for a picnic.
A.will stay
B.stay
C.would stay
D.stayed
答案解析：A。

本题考查混合条件句。

前半句是对将来情况的假设，用“if+一般现在时，主语+will+动词原形”结构；后半句也是对将来情况的假设，但与前半句相反，用“if+一般现在时否定形式，主语+will+动词原形”结构。

所以选A。

33.If I were you, I would study harder. But I am not you, so I don't.
A.would study
B.will study
C.studied
D.study
答案解析：A。

本题考查虚拟条件句。

前半句是对现在情况的虚
拟，用“if+were，主语+would+动词原形”结构，所以选A。

34.If he had come earlier, he would have seen the movie. But he didn't come earlier, so he missed it.
A.would have seen
B.will see
C.saw
D.see
答案解析：A。

本题考查虚拟条件句。

前半句是对过去情况的虚拟，用“if+had+过去分词，主语+would have+过去分词”结构，所以选A。

35.If it is sunny tomorrow, we will go to the beach. But if it is rainy, we will stay at home and watch TV.
A.will go
B.go
C.would go
D.went
答案解析：A。

本题考查混合条件句。

前半句是对将来情况的假设，用“if+一般现在时，主语+will+动词原形”结构；后半句也是对将来情况的假设，但与前半句相反，用“if+一般现在时否定形式，主语+will+动词原形”结构。

所以选A。

36.If I had enough money, I would buy a new car. But I don't have enough money, so I can't.
A.would buy
B.will buy
C.bought
D.buy
答案解析：A。

本题考查虚拟条件句。

前半句是对现在情况的虚拟，用“if+过去式，主语+would+动词原形”结构，所以选A。

37.If he were here, he would help us. But he isn't here, so he can't.
A.would help
B.will help
C.helped
D.help
答案解析：A。

本题考查虚拟条件句。

前半句是对现在情况的虚拟，用“if+were，主语+would+动词原形”结构，所以选A。

38.If it had snowed yesterday, we would have made a snowman. But it didn't snow, so we couldn't.
A.would have made
B.will make
C.made
D.make
答案解析：A。

本题考查虚拟条件句。

前半句是对过去情况的虚拟，用“if+had+过去分词，主语+would have+过去分词”结构，所以选A。

39.If I knew his phone number, I would call him. But I don't know his phone number, so I can't.
A.would call
B.will call
C.called
D.call
答案解析：A。

本题考查虚拟条件句。

前半句是对现在情况的虚拟，用“if+过去式，主语+would+动词原形”结构，所以选A。

40.If it rains tomorrow, we will have to stay at home. But if it doesn't rain, we will go to the park.
A.will have to stay
B.have to stay
C.would have to stay
D.had to stay
答案解析：A。

本题考查混合条件句。

前半句是对将来情况的假设，用“if+一般现在时，主语+will+动词原形”结构；后半句也是对将来情况的假设，但与前半句相反，用“if+一般现在时否定形式，主语+will+动词原形”结构。

所以选A。

41.If it rains tomorrow and I have enough time, I will go for a walk.
A.rains/have
B.will rain/will have
C.rained/had
D.is raining/have
答案解析：A。

此句为真实条件句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。

选项A 符合条件句的时态要求。

42.I would have gone to the party if I had known about it and had been invited.
A.had known/had been invited
B.knew/was invited
C.would know/would be invited
D.have known/have been invited
答案解析：A。

此句为虚拟条件句，对过去的情况进行虚拟，从句用过去完成时，主句用“would have + 过去分词”。

选项A 符合虚拟条件句对过去的时态要求。

43.If he studies hard and takes the exam seriously, he will pass.
A.studies/takes
B.will study/will take
C.studied/took
D.is studying/is taking
答案解析：A。

同样是真实条件句，“主将从现”，选项A 正确。

44.She would have bought the dress if it had been cheaper and she had had enough money.
A.had been/had had
B.is/has
C.was/had
D.will be/will have
答案解析：A。

虚拟条件句对过去虚拟，选项A 符合要求。

45.If they come early and we are ready, we can start the game.
e/are
B.will come/will be
C.came/was
D.are coming/are being
答案解析：A。

真实条件句，“主将从现”，选项A 正确。

46.I would have helped him if I had been able to and he had asked.
A.had been able to/had asked
B.am able to/asks
C.will be able to/will ask
D.was able to/asked
答案解析：A。

虚拟条件句对过去虚拟，选项A 符合。

47.If it snows tomorrow and we have a day off, we will go skiing.
A.snows/have
B.will snow/will have
C.snowed/had
D.is snowing/have
答案解析：A。

真实条件句，“主将从现”。

48.She would have gone on vacation if she had had the time and enough money.
A.had had/had had
B.has/has
C.will have/will have
D.had/had
答案解析：A。

虚拟条件句对过去虚拟。

49.If he practices regularly and is dedicated, he will improve his English.
A.practices/is
B.will practice/will be
C.practiced/was
D.is practicing/is being
答案解析：A。

真实条件句，“主将从现”。

50.If they had arrived on time and we had been prepared, we could have started the meeting.
A.had arrived/had been prepared
B.arrive/are prepared
C.will arrive/will be prepared
D.are arriving/are being prepared
答案解析：A。

虚拟条件句对过去虚拟。