2023届高考英语语法复习：动词不定式课件

非谓语动词--- 不定式的用法 Learning objectives: 1.To learn the usages of the infinitive : 主语（Subject） 表语（Predicative） 宾语（Object） 宾补（Object complement） 定语（Attributive）状语（Adverbial） 2.To master the usages. Ⅰ不定式用作主语 To grow trees is very important. It is very important to grow trees. 不定式作主语时,往往放在谓语之后,用it作形式主语。 Say in another way, using ‘it’. To learn from your friends is important. To leave without saying goodbye is impolite. To chat with Miss White is a pleasant thing. To walk to school takes me ten minutes. It is important to learn from your friends. It is impolite to leave without saying goodbye. It is a pleasant thing to chat with Miss White. It takes me ten minutes to walk to school. Ⅱ不定式作表语放在be 动词后面 To improve is to change; to be perfect is to change often. To see is to believe. To error is human; to forgive is divine(神圣的). Complete the following sentences. 1.The doctor’s suggestion is ______(take)more exercise. 2.The best way is______(talk) to your parents. 3.His plan is ____________________________ (今 年夏天 到北京旅游). 4.My purpose is __________________________ (帮你解决这个问题). to take to talk to travel to Beijing this summer to help you solve this problem find/think/consider/feel...+ it+ adj. + to do Ⅲ 动词不定式作宾语的注意事项（ⅰ） 不定式作宾语时，如带有宾语补足语，则要把不定式放到后面，用it作形式宾语，构成“主语+动词+it+宾补（形容词、名词）+不定式”结构。如： I found it necessary to talk to him again. I found it important to learn English. 动词不定式作宾语的注意事项（ⅱ） 有些动词既可跟不定式作宾语，也可跟动名词作宾语，但含义不同： forget to do sth.忘记要做某事 forget doing sth.忘记曾经做过某事 stop to do sth. 停下来去做某事 stop doing sth.停止做某事 go on to do sth.继续做另一件事 go on doing sth.继续做原来在做的事 need to do sth.需要做某事 need doing sth. 需要被做 remember to do sth.记住要做某事。 remember doing sth.记着做过了某事。 regret to do sth. 遗憾要做某事。 regret doing sth. 后悔做过了某事。 1. 别忘了离开时把灯关了。 Don’t forget before leaving. 2. 父亲必须戒烟了。 Father must stop . 3. 他看完电视后，继续看了一会书。 After he watched TV, he went