Unit5FirstaidDiscoverusefulstructures课件-高中英语人教版(2019)选择性.pptx

Discoverusefulstructures

ReviewV-ingforms(doing);1.Climbingmountainisverydangerous.;5.Lookingdownatherphoneasshewalked,shehitthedoor.;动词-ing形式(现在分词、动名词)在句子中可充当以下成分。;①动名词(在句子中起名词作用)作主语时,对于一些比较长的动名词短语,

一般采用“Itis...”和“Thereis...”两种句式来表示。;有些动名词用法已经成为固定句型,例如:

It’snousedoing...做……没用

It’snogooddoing...做……没益处/没好处

It’sawasteoftimedoing...做某事是浪费时间

It’sworthwhiledoing...做某事是值得的

It’snofundoing...做某事没意思

;2.宾语

Hemanagedtoescape_______(suffer)fromtheburns.

他设法避免那种烫伤。

After_______(hear)thefunnystory,allofuscouldn’thelp____________(laugh)eartoear.

听完了那个滑稽故事,我们所有人忍不住大笑了起来。;①某些动词后只能用动名词作宾语,例如:

;②有些动词短语后用动名词作宾语,例如:

cannothelp,putoff,keepon,dependon,thinkabout,setabout,

succeedin,worryabout,burstout,insiston,giveup,feellike,

dreamof,beusedto,getusedto,devoteto,lookforwardto,payattentionto,getdownto。;③在以下结构中,动名词作介词的宾语,介词常省略。

spend...(in)doing...花费……做某事

havedifficulty/trouble(in)doing...做……有困难/麻烦

stop/prevent...(from)doing...阻止……做某事

wastetime(in)doing...浪费时间做某事

bebusy(in)doing...忙于做某事

haveagood/hardtime(in)doing...高兴做某事/费了很大劲做某事

Thereisnopoint(in)doing...做某事毫无意义;Theseclothesneed________（wash）.

=Theseclothesneed_________________（wash）.这些衣服需要洗。;3.表语

1.动名词做表语，用来说明主语的内容：=Recitingthetextisourhomeworktoday.

Ourhomeworktodayis_______(recite)thetext.

我们今天的作业是背诵课文。

=Recitingthetextisourhomeworktoday.

2.现在分词做表语，说明主语的性质或特点：Thenewsisveryexciting.

;

有些动词后可跟现在分词作宾语补足语。

(1)在“感官动词+宾语+现在分词”结构中,常用的动词或动词短语有

see,watch,hear,feel,find,notice,observe,catch,listento,look

at等。;Hekeptthecar________