Unit13单元知识点人教版英语九年级全册.pdf

人教新目标版九班级全一册

Unit13Wearetryingtosavetheearth!

SectionA

l.playapartin参力口+n./ppn./v-ing

eg：Iwanttoplayapartinsavingtheearth.

2.cutdown肖i减

cutin插嘴

cutoff切断

cutup切碎

cutout删除

可数名词

havetheadvantagecf有的有利条件

beto...advantage对有利

4.makeadifference起作用；有影响

makeadifference(to...)(对..)生影响或作月

5.notonly...butalso...不但而且.

连接两个对等的成分，also可以省略

eg:Inotonlyplaytennisbut(also)practiseshoo:ing

eg:NotonlyMr.Libut(also)hissonlovesthemovie.

连接两个主语时,就近原则

eg:NotonlydoesMissLilikemusic,but(also)shelikessports

doharmto对造成损害

eg:Smokingwilldoharmtoyourhealth.

beharmfulto对..有害

eg:Dontreadinthesun.Itisharmfultoyoureyes

7.thenumberof……的数量

eg：Thenumberofgirlsinourclassis30

辨析

anumberof很多接可数名词复数谓语动词用复数形式

thenumberof的数量接可数名词及数谓语动词用单三形式

8.beagainst…反对

反：befor...支持

eg:Iamnotaganstyouridea.Instead,Imforyou

根本结构be+动词的过去分词

eg:Theglassisbroken

主动语态Wevisitedthatfactorylastsummer.

被动语态Thatfactorywasvisitedbyuslastsummer.

感宜动词/使役动词变为被动语态时带to

主动：IoftenhearMarysinginthenextroom

被动：Maryisoftenheardtosing