1、1 (每日一练每日一练)初三英语条件状语从句易混淆知识点初三英语条件状语从句易混淆知识点 单选题 1、How is Mary getting on with her lessons?一 She will fail the exam _ she studies harder.AafterBunlessCas soon asDwhen 答案:B 解析:句意:玛丽功课做得怎么样?除非她更加努力学习,否则考试就会不及格。考查连词。after 在之后;unless 如果不,除非,表示条件;as soon as 一就;when 当时候。根据句意可知,更加努力学习是考试及格的条件,unless 符合句意。故
2、选 B。2、If each of us _ something for the environment,all of us will have a better life.Awill doBdoesCis doingDdo 答案:B 解析:句意:如果我们每个人为环境做点事情,我们所有人将有一个更好的生活。考查 if 引导的条件状语从句的时态。if 表示“如果”时遵循“主将从现”原则,即主句用一般将来时,从句用一般现在时;空格处在从句位置,要用一般现在时,故选 B。3、I wonder if you _ us for the English party tomorrow.If I _ free,
3、I will go with you.2 Awill join,amBwill join,will beCjoin,am 答案:A 解析:句意:我想知道你明天是否来参加我们的英语晚会。如果我有时间,我会和你一起去。考查动词时态的用法。第一处是 if 引导的宾语从句,根据“tomorrow”可知,用一般将来时 will do 表示;第二处是 if 引导的条件状语从句,需满足“主将从现”原则,主语是 I,be 动词用 am。故选 A。4、Our city will become more and more beautiful _ we try our best to protect it.Aunl
4、essBifCsoDbut 答案:B 解析:句意:如果我们尽力保护我们的城市,它会变得越来越美丽。考查连词辨析。unless 除非;if 如果;so 所以;but 但是。根据“Our city will become more and more beautiful.we try our best to protect it.”可知如果我们尽力保护城市,它会变得越来越美丽,故选 B。5、We will get better grades _ we try our best.Aas long asBso thatCas far asDalthough 答案:A 解析:句意:只要我们努力,就会取得更
5、好的成绩。考查连词辨析。as long as 只要;so that 以便;as far as 就而言;although 虽然。“we try our best”是“We will get better grades”的条件,用 as long as 引导条件状语从句,故选 A。6、Dont be afraid.My little teddy dog wont bite you,_ it is attacked.Youd better put it on the lead.3 AunlessBifCuntilDbefore 答案:A 解析:句意:不要害怕。我的小泰迪狗不会咬你的,除非它受到攻击。
6、你最好把它牵着。考查连词辨析。unless 除非;如果不,引导条件状语从句。if 如果,引导条件状语从句;是否,引导宾语从句。until 直到,引导时间状语从句。before 在之前,引导时间状语从句。根据句意可知,这里表示“除非受到攻击,否则它是不会咬人的”,应用 unless 来引导条件状语从句。故选 A。7、The boys father wont allow him to play computer games _ he has finished his homework.AifBwhenCsinceDunless 答案:D 解析:句意:男孩的父亲不让他玩电脑游戏,除非他完成作业。考查
7、从属连词辨析。if 如果;when 当时;since 自以来;unless 除非,如果不;根据“The boys father wont allow him to play computer games.he has finished his homework.”可知,这是一个条件状语从句,“男孩完成作业”是他父亲让他玩电脑游戏的条件。因此,使用 unless,表示“除非,如果不”符合语境。故选 D。8、I dont know _ he will come tomorrow._ he comes,Ill tell you Aif;WhetherBwhether;Whether Cif;That
8、Dif;If 答案:D 解析:句意:我不知道他明天会不会来,如果来了,我就会告诉你 考查宾语从句和状语从句。根据情境可知,第一空前 know 后引导宾语从句,用 if 或 whether 作为引导词,表4 示“是否”;第二句是条件状语从句,用 if 表示“如果”,故选 D。9、Friends are like books.You dont need a lot of them _ they are good.Aas well asBas far asCas long asDas soon as 答案:C 解析:句意:朋友就像书一样,只要他们足够好,你不需要很多。考查短语辨析。as well a
9、s 此外;as far as 就而言;as long as 只要;as soon as 立刻。“they are good”是“You dont need a lot of them”的条件,用“as long as”引导时间状语从句。故选 C。10、Friends are like books.You dont need a lot of them _ they are good.Aas well asBas long as Cas soon asDas often as 答案:B 解析:句意:朋友就像书。只要他们是好的,你不需要很多。考查连词辨析。as well as 既又;as long as 只要;as soon as 一就;as often as 每当。You dont need a lot of them 和 they are good 可知,句子前后是条件关系,用 as long as 引导条件状语从句。故选 B。