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专题六： if引导的条件状语从句 寒假提高练
2024--2025学年初中英语人教版八年级上册
1．—I failed again! I feel very upset.
—Don’t lose heart. If you ________ going, you will make it finally!
A．keep B．kept C．will keep D．are keeping
2．If it ________ tomorrow, I won’t go shopping with my mom.
A．rain B．rains C．doesn’t rain D．don’t rain
3．There ________ a sports meet next week if it ________.
A．is going to have; doesn’t rain B．is going to be; doesn’t rain
C．is going to be; won’t rain D．is going to have; won’t rain
4．I don’t know if he ________ here. If he ________, I will tell you.
A．comes; comes B．will come; will come
C．will come; comesD．comes; will come
5．I don’t know if it ________ sunny tomorrow. If it ________ sunny, I will go fishing.
A．will be; is B．is; will be
C．will be; is going to be D．is; is
6．I ________ you with your English if you come tomorrow.
A．help B．helps C．helped D．will help
7．You ________ more confident if you are well-prepared for your speech.
A．will be B．are C．were D．have been
8．—I’m not sure if he _________ to the party this Sunday.
—I will tell you if he ________.
A．comes, comes B．will come, comes C．will come, will come
9．If you smile at others, they ________ back.
A．smile B．will smile C．smiled D．smiles
10．Remember to take away the food on your plate ________ you can’t eat it up.
A．if B．unless C．after D．before
11．—I wonder if Li Hua ________ to the hospital to receive the vaccination（疫苗接种）.
—I am sure he will if he ________ time.
A．goes; will have B．will go; has C．will go; will have
12．As we live in a rapidly developing world, we will be left behind ________ we keep learning.
A．unless B．if C．after D．though
13．For our safety, we must keep away from the tall buildings ________ the wind blows hard.
A．if B．although C．so
14．—Lucy, the Dragon Boat Festival is coming. I want to learn how to make zongzi.
—OK. If my grandma ________ free tomorrow, she will teach us.
A．is B．are C．am D．will be
15．My parents won’t allow me to do things I like ________ I finish my homework.
A．if B．but C．because D．unless
16．It is really dangerous _______ people run the red traffic light.
A．if B．unless C．though D．until
17．You won’t pass the PE exam successfully ________ you exercise every day.
A．if B．unless C．as long as
18．Our country will be much better for everyone in future ________ we all do something to help now.
A．if B．before C．so that D．even though
19．________ you treat others with your heart, you will get friendship in return.
A．If B．Until C．Unless
20．We’ll have a picnic in the park this Sunday ________ there is a heavy rain.
A．whether B．unless C．since D．because
21．If you ________ along this road, you will find a park.
A．go B．went C．goes
22．Mary is good at writing. I am sure she’ll get a good place ________ she takes part in the writing competition.
A．before B．if C．though D．unless
23．I don’t know if it _________ tomorrow, but if it _________, I’ll stay at home.
A．will rain; rains B．will rain; will rain C．rains; will rain D．rains; rains
参考答案
1．A
考查时态。keep原形；kept过去式；will keep一般将来时；are keeping现在进行时。根据“If you …going, you will make it finally!”可知本句是if引导的条件状语从句，遵循“主将从现”原则，从句应用一般现在时。故选A。
2．B
考查主谓一致。由“If it…tomorrow, I won’t go shopping with my mom”可知，此处表示如果明天下雨，我就不和妈妈去购物了，it作主语，动词用第三人称单数。故选B。
3．B
考查there be句型及时态。there be句型的将来时是“There is going to be”，可排除AD项；本句包括if引导的条件状语从句，主句是一般将来时，从句要用一般现在时，即“主将从现”。 4．C
考查动词时态。第一个空是if引导的宾语从句，根据语境判断动作还未发生，因此用一般将来时态“will come”；第二个空是if引导的条件状语从句，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，主语是he，动词用第三人称单数形式comes。故选C。
5．A
考查动词时态。第一句是由if引导的宾语从句，主句时态为一般现在时，又根据“tomorrow”可知，宾语从句应用一般将来时，其结构为“will be”；第二句是由if引导的条件状语从句，应遵循“主将从现”原则，从句应用一般现在时，且从句主语it表示单数概念，谓语动词应用is。故选A。
6．D
考查动词时态。if引导的条件状语从句，遵循“主将从现”，因此空处所在句子为一般将来时(will do)。故选D。
7．A
考查if条件句时态。if引导条件状语从句，应遵循“主将从现”时态原则，即主句用一般将来时，从句用一般现在时。空格处为主句部分，故用一般将来时，故选A。
8．B
考查动词时态。第一空所在的句子为宾语从句，表示将来，时态用一般现在时；第二空所在的句子为条件状语从句，主句是一般将来时，从句通常用一般现在时表示将来。故选B。
9．B
考查时态。句中“If”意为“如果”，引导条件状语从句，遵循主将从现原则，故主句中应用一般将来时，其构成为“will do”。故选B。
10．A
考查连词。if如果；unless除非；after在……之后；before在……之前。根据“Remember to take away the food on your plate...you can’t eat it up.”可知，前后是条件关系，用if引导条件状语从句。故选A。
11．B
考查动词时态。第一句中if引导宾语从句，表示对将来是否会发生某事的不确定，从句用一般将来时，其结构为will do；第二句中if引导条件状语从句，遵循主将从现原则，从句用一般现在时，主语“he”后接动词的第三人称单数形式has。故选B。
12．A
考查连词辨析。unless除非；if如果；after在……之后；though虽然。“we keep learning”是“we will be left behind”的否定条件，用unless引导条件状语从句。故选A。
13．A
考查连词辨析。if如果；although虽然；so所以。“the wind blows hard”是“we must keep away from the tall buildings”的肯定条件，用if引导条件状语从句。故选A。
14．A
考查主谓一致及动词时态。此处是含if引导的条件状语从句的复合句，遵循“主将从现”原则，从句应为一般现在时，主语是第三人称单数，应用be动词is。故选A。
15．D
考查连词辨析。if如果；but但是；because因为；unless除非。“I finish my homework”是“My parents won’t allow me to do things I like”的否定条件，用unless引导条件状语从句。故选D。
16．A
考查连词辨析。if如果；unless除非；though尽管；until直到……为止。“people run the red traffic light”是危险的肯定条件，用if引导条件状语从句。故选A。
17．B
考查连词辨析。if如果；unless除非，如果不；as long as只要。根据“You won’t pass the PE exam successfully...you exercise every day.”可知后句是前句的否定条件，应用unless引导条件状语从句，故选B。
18．A
考查连词辨析。if如果；before在之前；so that以便；even though即使。根据“Our country will be much better for everyone in future … we all do something to help now”可知，空格后是前半句的肯定条件，用if引导条件状语从句，故选A。
19．A
考查连词辨析。If如果；Until直到；Unless除非。此处前句是后句的肯定条件，“用心对待别人”就会“得到友谊”，需用if引导条件状语从句。故选A。
20．B
考查连词辨析。whether是否；unless除非；since自从；because因为。根据“We’ll have a picnic in the park this Sunday … there is a heavy rain.”可知，除非下雨，否则就回去野餐，故选B。
21．A
考查if条件句。if引导的条件状语从句，遵循主将从现。从句用一般现在时，主语是you，动词用原形。故选A。
22．B
考查连词辨析。before在……以前；if如果；though尽管；unless除非。根据“I am sure she’ll get a good place...she takes part in the writing competition.”可知后句是前句的条件，应用if引导条件状语从句，故选B。
23．A
考查if条件句和宾语从句。前半个句子中包含一个由if引导的宾语从句，根据时间标志词“tomorrow”可知，要用一般将来时，所以可以先排除选项CD；后半句子包含由if引导的条件状语从句，此时根据“主将从现”的原则，从句要用一般现在时，主语是第三人称单数，动词需要加s。故选A。
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