Unit 2 Section A(Grammar Focus～4c)-【四清导航•河南专版】2022-2023学年八年级英语下册作业课件(人教版)

第三课时　Section A(Grammar Focus～4c) ——单元语法精讲精练 英语 八年级下册 人教版 四清导航 动词不定式的基本形式是“to＋动词原形”，在句中可以作主语、宾语、表语、定语和状语。还可以用在复合结构中作宾语补足语。 1．作主语。动词不定式作主语时，常用it作形式主语，而把作真正主语的动词不定式放在句尾。 It took me half an hour to walk there.我走到那里花了半小时。 2．作宾语。后面常跟动词不定式作宾语的动词(词组)有want, hope, begin, learn, try，decide, forget, remember, like, love, expect, agree, refuse, wish, plan, afford, choose, would like, need, start等。 I decide to spend the summer in Yunnan.我决定在云南度过这个夏天。 3．作表语。 His dream is to be a doctor.他的梦想是成为一名医生。 4．作定语。动词不定式作定语，要放在它所修饰的名词或代词后。 Would you like something to drink？你想喝点什么吗？ 5．作状语。放在句首或句尾表示目的等；跟在作表语的形容词或过去分词的后面，作原因状语。 To catch the train，he got up early.＝He got up early to catch the train，为了赶火车，他早早地起来了。 I'm excited to hear the news.听到这个消息我很兴奋。 6．作宾语补足语。后面常跟动词不定式作宾语补足语的动词(词组)有ask, tell, want, expect, like, wish, would like等。 You can ask him to help you.你可以请求他帮你。 ►动词短语主要有以下几种类型： 1．动词＋介词(相当于及物动词，可直接接宾语) look after 照顾　belong to 属于 2．动词＋副词(接代词作宾语时，宾语要放在动词和副词中间；接名词作宾语时，宾语可以放在动词和副词中间，也可以放在副词之后) hand out 分发　cheer up振奋起来 3．动词＋副词＋介词　come up with 想出 4．动词＋名词＋介词(接宾语时，宾语只能放在介词后面) take part in 参加　take care of 照顾 5．动词＋名词(常用作不及物动词) take place 发生　make mistakes 犯错 一、用方框中所给短语的适当形式填空。 give it up，put off，clean up，turn on，come up with 1．—Could you the computer for me，dear？I want to check my e­mails. —Certainly，I'll do it right away. 2．The event is only two weeks from now.We need to a plan about it. 3．It's a bad habit to what you can do today until tomorrow. 4．Smoking is bad for your health.You'd better ． 5．—I hope to be a volunteer on weekends. —You could help to the city park. turn on come up with put off give it up clean up 7 二、用括号内所给词的适当形式填空。 I'm Li Hua.Last vacation，our school organized an activity 6. (help) a poor primary school.I decided 7. (join) in it and become a volunteer teacher there. My job is 8. (teach) English.N