Unit 4 Discovering Useful Structures（课件）- 2024-2025学年高一英语（人教版2019必修第三册）.pptx

;

LeadinLookatthefollowingsentencesan

infinitives.Inpairs,discusstheirfu

1.Scientistsworkhardtofindanswers.目的

2.Theymakevehiclestocarrybravepeoplesecretsoftheuniverse.目的状语

3.However,somescientistsweredeterminedtheirdreamtoexplorespace.定语

4.YuriGagarinbecamethefirstpersoninthe

5.AmericasNASAspaceagencylaunchedV

1977tostudydeepspace.目的状语

6.Thesedisastersmadeeveryonesadanddis

toexploretheuniverseneverdied.定语;;

Definition

动词不定式(infinitive)是不带词形变化的动词形式。因为该形式内的动词不受主语的时态、人称和数的限定，因此被称为——不定式。

非谓语动词nonfiniteverb[nntvepicpeserunds]

或称非限定动词，指不受主语的人称、数和时态限定的

动词。;;

主、宾、定、

表、状、

(宾)补

+独立结构;

⑤主◎宾表U定Ω)状补

objectattributeobject

complement;

1.作主语

例句：那样做是很幼稚的

◆Toactlikethatischildish

=tischildishtoactlikethat

◆Tomakesuchamistakeisfoolish.

二Itisfoolishtomakesuchamistake.;

常接不定式做宾语的动词有：

afford,agree,aim,arrange,ask,attempt,choose,continue,expect,learn,manage,plan,prefer,prepare,promise,prove,refuse,等.;

注意以下几组词的区别：

(1)rememberdoing/todo

(2)forgetdoing/todo

(3)meandoing/todo意味着……/打算做

(4)regretdoing/todo

(5)stopdoing/todo;

带to的不定式做宾语补足语的动词有：

ask,beg,promise,permit,request,allow,invite,encourage,advise,persuade,force,order,remind,等.;

常见的加不定式做宾语的动词：agree,attempt,choose,claim,dare,

decide,demand,determine,expect,fail,hate,hesitate,hope,hurry,

intend,learn,manage,offer,plan,prepare,pretend,promise,refuse,

seem,tend,threaten,want...;

e.g.Myjobistoprotecttheworld.Toseeistobelieve.(眼见为实)Myambitionistoworkforafirm….

不定式常用在系动词be,seem,appear,

get,remain等后作表语。;;

7.Chinabecamethethirdcountryintheworldtoindependentlysendhumansintospacein2003.定语

8.ThissignalledonestepfurtherinChinasplantoestablishaspacestationinthefuture.定语

9.Morerecently,ChinahassentChange4toexplorethesurface

ofthefa