A be covered with B“A被B覆盖着”如：
The roads were covered with snow. 路上覆盖着雪。 12、The roads are very difficult to ride on. =It’s very difficult to ride on the road. 道路很难骑。 类似表达：
It’s comfortable to live in the house. =The house is comfortable to live in. 13、情景交际用语：表示同意和不同意的用语 I disagree with you.
“disagree with sb” 意为“不同意某人”，是agree with s=b的反义短语。
重点语法：条件状语从句
表示主句动作发生的条件,由if（如果），as long as（只要），unless（除非）等引导。主要有以下3种情况：
1、主句用一般将来时，从句用一般现在时（主将从现原则）。如： I won’t go if he doesn’t go. 如果他不去，我就不会去。
We won’t pass the exam unless we study hard.除非努力学习，我们才会通过考试。 2、主句用情态动词must, may, should, can等引导，从句用一般现在时。如： If we break the traffic rules, we may get a fine and even be in danger. 如果违反了交通规则，我们会受到惩罚，甚至会很危险。
3、“祈使句+and/or引导的简单句”。祈使句在意义上相当于条件状语从句。如： Hurry up, or you will be late.
=If you don’t hurry up , you will be late. 快点，否则你会迟到。
Study hard and you can catch up with others. =If you study hard, you can catch up with others. 努力学习，你就会赶上别的同学。
六、易错题练习
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1、用所给词的恰当形式填空。
1) He may come here if he (have) time next Sunday. 2) If you break the rules, you (get) a fine.
3) Our teachers often tell us not to be (care) in the exams. 4) I found a book on the ground when (walk) in the street. 5) Why don’t we to the park swimming? (go)
6)If it __________ (not rain) tomorrow, we _________ (go) hiking. 7)He ________ (pass) the exam if he ______ (work) harder at it.
8)If everyone _________ (obey) the traffic rules, the roads _________ (be) safer. 9)It’s important for us ________ (know) about traffic rules. 2、汉译英：
1) 如果我们违反交通规则，我们将会受罚甚至会有危险。 _____________________________________________________________ 2) 如果在大街上骑车，你必须要小心。
_____________________________________________________________ 3)如果发生事故，你可能会受伤。
_____________________________________________________________
重点语法：条件状语从句
表示主句动作发生的条件,由if（如果），as long as（只要），unless（除非）等引导。主要有以下3种情况：
1、主句用一般将来时，从句用一般现在时（主将从现原则）。如： I won’t go if he doesn’t go. 如果他不去，我就不会去。
We won’t pass the exam unless we study hard.除非努力学习，我们才会通过考试。 2、主句用情态动词must, may, should, can等引导，从句用一般现在时。如： If we break the traffic rules, we may get a fine andeven be in danger. 如果违反了交通规则，我们会受到惩罚，甚至会很危险。
3、“祈使句+and/or引导的简单句”。祈使句在意义上相当于条件状语从句。如： Hurry up, or you will be late.
=If you don’t hurry up , you will be late. 快点，否则你会迟到。
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Study hard and you can catch up with others. =If you study hard, you can catch up with others. 努力学习，你就会赶上别的同学。 考题链接：
①I don’t know if he___________ tomorrow. If he_____________， we’ll climb the mountain.(2013牡丹江) A. comes, comes B. comes. will come C. will come,comes
②Your handwriting will certainly improve __________you practice it every day.（2013大连） A. though B.before C. if D. until
③If he_____________ the early bus, he____________there on time. A. catches, will get B. will catch , will get C. will catch, gets D. catches, gets
③If it is fine, the school sports meet______________two days. A. last B.lasts C. lasted D. will last
④We should make sure who it is _________ someone knocks at the door in dark. A. whether B.while C. as D. if
⑤--Shall we play basketball on the playground this Saturday afternoon? -- We’ll go if it_________. A. rains B.will rain C. doesn’t rain
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D. won’t rain
⑥--Lucy, what about going camping if it__________tomorrow? --Soundsgreat! (2012衡阳) A. didn’t rain B. doesn’t rain C. won’t rain
⑦If there ____________ no buying and selling of animals, there_____________ no killing in nature.(2012青海) A. is ; will be B. will be; will be C. is;is D. will be ; is
⑧- Will Amy go to the party tomorrow? --If you don’t,____________. A. she will, too B. she won’t ,either C. she does, too D. she doesn’t, either
⑨The radio says there______________ rain tomorrow. A. is B.have C. will be D. will have
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