八年级下现在完成时的用法及练习.doc
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一现在完成时
1.过去某一时间点发生的动作对现在产生影响。
2.过去某一时间点发生的动作持续到现在或还将持续下去。
二基本结构
have/has+done助动词(可以帮助构成肯定、疑问和否定句)
1.Hehascleanedhisroom.
(写一个一般疑问句)
2.ShehaslivedinLondonforfouryears.(划线部分提问)
3.HehasbeentoChina,________?
(写出反义疑问句部分)
4.Theyhavecomebackfromwork.(写否定句)
三Keywords
1.注意:
already用于肯定句,yet用于疑问句和否定句中
A:
______yourbrother______hishomeworkyet?
(finish)
B:
Yes,he‘salreadydoneit.
2.注意:
ever曾经用于疑问句中never从不带有否定意义
A:
_______youever_______tothepark?
(be)B:
No,never.
3.Just刚刚与现在完成时连用一般置句中Justnow刚才与一般过去时连用
I______just________thedesk,youcantakeittoyourclassroom.(mend)
4.since后面带过去时间或有一般过去时的句子
Tom___________inthefactorysinceheleftschooltenyearsago.(work)
5.for+一段时间
A:
Howlong______you________inthisschool?
(teach)B:
For6years.
6.sofarWe_______only____________100treessofar.(answer)
7.inthepast10yearshowlongtwice也可以是其他表示次数的词
Hehasboughtthebook.Hehasboughtthebookforaweek.
Hehashadthebookforaweek.Shehasboughtthecomputerfortwoyears.
HowlonghaveyoucometotheUnitedStatesAnnhasgonetoChinasincethreemonthsago.
例句1.Mybrotherhasjoinedthearmyforfiveyears.
2.IhaveleftShanghaifor3days.
3.Ihaveborrowedthedictionarysince3daysago.
4.Thefilmhasbegunfor10minutes
5.Theconcerthasfinishedforhalfanhour
6.Hisdoghasdiedfortwoyears.
四短暂性动词转换成延续性动词
Buy---have/hashadleave-----have/hasbeenaway
cometo---have/hasbeeninborrow-----have/haskept
goto-----have/hasbeeninbegin----have/hasbeenon
gotto-----have/hasbeeninfinish----have/hasbeenover
join----have/hasbeenindie---have/hasbeendead
have/hasbeenasoldier
五havegoneto去了某还没回来不与只用于第三人称
havebeento去过某地已经回来常与ever,never,once,twice,连用
havebeenin一直留在某地与for/since连用用howlong提问
1,。
Hersister_____________Australia,Sheleftthismorning.
2.A:
WhereisBob?
B:
He____________Japanwithhissister.
3.A:
Howlong____you_______China?
B:
I_________herefor3years.
4.A:
_____youever________thecity?
B:
No,never.
六.用所给动词的适当形式填空
1.I____already____(see)thefilm.I________(see)itlastweek.
2._____he____(finish)hisworktoday?
Notyet.
3.___you____(be)toHongKong?
Yes,I_____(be)theretwice.
4.He_______just______(finish)hishomework.
5._______theyoungwomanever_______(travel)toEngland?
6._______eachofyou_______(read)"Gonewiththewind"yet?
7.Haveyou_______(get)anynewCDs?
8.Myfamilyhavenever_______(be)toSanya.
9.They_______ever_______(eat)fishandchips.
10.I_______just_______(lose)mysciencebook.11.HasTom_______(finish)hiswork
12.Ihavealready_______(read)thisbook.13.Shehasn't_______(return)herbookyet.
14._________youever____(eat)chocolatesundaes?
No,never.
15.Myfather____just____(come)backfromwork.Heistirednow.
16.Where'sLiMing?
He__________(go)totheteacher'soffice.
17.Shanghai_____(be)asmalltownhundredsofyearsago.Nowit_________(become)alargecity.18.I____________(work)heresinceI___________(move)herein1999.
9.SofarI_______________(make)quiteafewfriendshere.
20.Howlong________theWangs______________(stay)here?
Fortwoweeks.
21.I________just___________(finish)myhomework.
22.____you____________(find)yoursciencebookyet?
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