语法总复习-不定式to-do-用法归纳一(公开课课件).pptVIP

分析下面的不定式在句子中作什么成分 1 To see is to believe. 2 Your task is to clean the classroom. 3 I expect you to give me some help. 4 She was very busy and had no time to visit her friends. 5 He spoke loudly (so as / in order) to be heard. 不定式 （一）学习下面句子，归纳用法。 1. To do morning exercises is useful for our health. 2. To catch the 5:00 bus early in the morning is not a good idea. 3. It’s important for us to learn English well. 4. It is not a good idea to catch the 5：00 bus early in the morning. 归纳： 不定式作主语，表示具体的某次动作。若不定式结构比较复杂，常用it 作形式主语，真正的主语放在句子的后面。 高考链接 (1)(真题改编·山东)Its standard practice for a company like this one________(employ) a security officer. （二）学习下面句子，归纳用法。 1. His dream is to be a doctor. 2. My work is to clean the room every day. 3. My wish is to become a teacher． 归纳： 不定式作表语，表示将来的情况，说明主语的内容。其主语常常是wish, idea, task, purpose, duty, job等表示意向、打算、计划的词。 练习： Your job today is ________( clean) the playground. （三）学习下面句子，归纳用法。 1. The driver failed to see the other car in time. 2. He cant afford to buy the expensive car. 3. I think it useful to learn a foreign language. 4. I feel it my duty to say that you are wrong. 归纳： 1. 不定式作宾语，常跟在某些动词后。不定式作宾语动词口诀 决心学会选计划，拒绝答应想假装； 主动设法愿希望，同意请求帮一帮； 准备威胁易声称，渴望申请败踌躇。 其对应的动词分别为：decide/determine, learn, choose, plan, refuse, promise, want/attempt, pretend, offer, manage, expect/wish/hope, agree, ask/beg, help, prepare, threaten, tend, claim, desire/long, apply, fail, hesitate。 2. 若不定式结构比较复杂，通常用 it 作形式宾语，真正的主语放在句子的后面，该用法常见的动词有think, find, make, believe, consider, suppose, feel等。 3. 一些动词既可跟动名词又可跟不定式作宾语，但是两种情况下的语义不同。 remember to do sth.记住要做某事 remember doing sth.记得做过某事 forget to do sth.忘记要做某事 forget doing sth.忘记做过某事 regret to do sth.对将要做的事抱歉 regret doing sth.对发生过的事后悔 try to do sth.设法……，试图…… try doing sth.试试看，试一试 mean to do sth.打算做…… mean doing sth.意味着 stop to do sth.停下来做另一件事 stop doing sth.停止做某件事 (补充) 接doing形式的动词及短语 1.动名词作宾语： finish doing sth.完成做某事； enjoy doing sth. 喜欢做某事； practice doing sth. 练习做某事；imagine doing,想象做某事；