初中英语动词不定式的用法小结.docx

初中英语动词不定式的用法小结 Summary of the Use of Infinitives in Middle School English 1.As a subject。it can be replaced by "it"。and the infinitive is placed after it。which is the real subject。For example。"To learn a foreign language is not easy" can be changed to "It is not easy to learn a foreign language." 2.As a predicate。the infinitive follows the verb "be"。For example。"My idea is to ring him up at once." 3.Verbs that can commonly take infinitives as objects include: agree。hope。decide。need。mean。wish。fail。want。begin。and would like。For example。"He has decided to go to the countryside." 4.The structure of "n word + infinitive" can be used as the object of verbs such as know。think。and find out。For example。"I don't know who to ask." 5.The structure of "n word + infinitive" can also be used as the direct object of verbs such as show。teach。and ask。For example。"She told me where to find the earphone." 6.If the object is too long。"it" can be used as a formal object。forming the structure of "subject + verb + it + noun or adjective + to do sth"。and the verb is often find。think。feel。etc。For example。"I found it difficult to。him." 7.Infinitives can be used as the object of ns。For example。"Autumn harvest is about to start" and "I'm worrying about what to do next." 8.Infinitives used as adjectives have a direct object nship with the modified word。For example。"I have a lot of books to read." 九、作为定语的动词不定式必须与被修饰词有主谓关系。例如，我们只有一间寒冷的房间可供居住。 十、作为定语的动词不定式与被修饰词之间只有修饰关系。例如，今天我们没有时间去城里。 十一、作为状语的动词不定式通常表示目的、原因、方向或结果等。例如，我很高兴见到你。他们跑过来欢迎外宾。 十二、不定式复合结构“for sb to do sth”可以用作主语、表语、定语或状语。例如，这得由她来决定（表语）。这里有很多书可供你阅读（定语）。这本书太难了，孩子们看不懂（结果状语）。需要注意的是，当形容词指的是to do sth的性质时，介词for应该被使用。例如，孩子在这条河里游泳很危险（游泳这件事情危险）。当形容词指的是sb的性质时，介词of应该被使用。这些形容词通常修饰人，如good、bad、polite、unkind、kind、nice、clever、right、wrong、careful和careless。例如，你这么做真粗心（你这个人粗心）。 十三、动词hear、see、feel、watch、notice、look at和listen to等后面的动词不定式作宾语补足语时不能带to。例如，我听到他唱歌。 Many people enjoy watching others play games. When using "let," "make," or "have" followed by a verb。th