Unit 4 Natural disasters Grammar课件（共牛津深圳版九年级下册）.pptx

Unit4Naturaldisasters●;

PartILead-in

请说出各句中it的作用。

1.Itiseasytounderstandwhyhehasnotcomeback.

代替动词不定式短语

2.Itiswinternow.

表示季节

3.Itseemsstrangethattheyarrivedatthesametime.

代替that从句;

请说出各句中it的作用。

4.Itistwoblocksawaytothenearestbankfromhere.表示距离

5.Itishotinsummerandcoldinwinterinthatcity.表示天气

6.Itistenthirtynow.

表示时间;

PartIIWhile-Learning

Grammar

Usingitastheemptysubject;

Usingitastheemptysubject

Wecanuseitastheemptysubjectlikethis:

Itisoneoclock.

Itissummernow.

Itrainedallday.

Itisonlyafive-minutewalkfrommyhometo

theschool.

Itishotinthisroom.;

Workouttherule

Weoftenuseittorefertothetime,season,weather

distanceandtemperature.;

AAnswerthesequestionsusingitasthesubject

1Whatistheweatherliketoday?

Itshot.;;

Wecanalsouseitastheemptysubjectofa

sentencetoreplaceato-infinitive.;

Ittookalongtimetobuildthehouse.(=Tobuildthehousetookalongtime.)

ItiswrongtopaynoattentiontoKevin.(=TopaynoattentiontoKeviniswrong.)

Itisnotagoodideatositaroundandworryabouttheflood.(=Tositaroundandworryaboutthefloodisnotagoodidea.);

CWriteasentenceusingitandato-infinitiveunder

eachpicturebelow.;

have/park/picnic/nice

Itisnicetohavea

picnicinthepark.;

DPutthewordsinbracketsinthecorrectordertocompletetheconversations.

1S1:Lookatthesky.Therearemanydarkclouds,andthewindis

blowingstrongly.

S2:Itseemsthatatyphooniscoming.

(it/seems/atyphoon/that/coming/is)

2S1:IsyourfathergoingtoBeijingtoday?

S2:No.Itappearsthattheflighthasbeencancelled.

(it/appears/hasbeencancelled/theflight/that)

3S1:MarylooksverysadItseemsthatsomethingbadhas

(it/seems/somethinghappehetdhtδhherenedto)

S2:Iheardthathersondiedintheflood.;

动词ing