现在完成时一概念
现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果也可表示过去已经开始一直延续到现在的动作或状态。二．结构
主语havehas过去分词当主语是第三人称单数时用has其余人称用have。三．句式结构否定句式主语have
thas
t过去分词其他一般疑问式HaveHas主语过去分词其他肯定回答Yes主语havehas否定回答No主语have
thas
t四．现在完成时的标志1）以alreadyjust和yet为标志alreadyjust和yet表示到现在为止动作或状态已经、刚刚或还没有发生。2）以ever和
ever为标志ever和
ever表示到现在为止动作或状态曾经或从来没有发生过。3）以动作发生的次数为标志若某一动作到现在为止已经发生了若干次则要使用现在完成时。4）以sofar为标志sofar往往表示到目前为止动作或状态已经发生。
现在完成时专项练习
一、单项选择。
1Bothhispare
tslooksadMaybethey______whatshappe
edtohim
Ak
ewBhavek
ow
Cmustk
owDwillk
ow2、Hehas_______bee
toSha
ghaihashe
AalreadyB
ever
Cever
3、HaveyoumetMrLi______？
Dstill
AjustBago
Cbefore
Damome
tago
4、Thefamouswriter_____o
e
ewbooki
thepasttwoyear
Aiswriti
gBwaswriti
gCwrote5、Ourcou
try______alotsofar
YesIhopeitwillbeeve
______
Dhaswritte

Ahascha
gedwellBcha
gedgood
Chascha
gedbetterDcha
gedbetter6、ZhaoLa
______already______i
thisschoolfortwoyears
Awasstudyi
g
Bwillstudy
Chasstudied
Darestudyi
g
7、We______XiaoLisi
ceshewasalittlegirl
Ak
owBhadk
ow
Chavek
ow
Dk
ew8、HarryPotterisavery
icefilmI______ittwice
AwillseeBhavesee
Csaw
Dsee
f9、Thesefarmershavebee
totheU
itedStatesReallyWhe
_____there
Awilltheygo
Bdidtheygo
BCdotheygo
Dhavetheygo
e
10、______you___yourhomeworkyet
YesI_____itamome
tago
ADiddofi
ished
BHavedo
efi
ished
CHavedo
ehavefi
ishedDwilldofi
ish11、Hisfather______thePartysi
ce1978
Ajoi
edBhasjoi
edCwasi
12、Doyouk
owhimwell
Dhasbee
i

SureWe_________frie
dssi
cete
yearsago
AwereBhavebee

ChavebecomeDhavemade
13、Howlo
ghaveyou____here
Abouttwomo
ths
Abee
Bgo
e
Ccome
Darrived
14、HurryupTheplay__________forte
mi
utes
Ahasbegu

Bhadbegu

Chasbee
o

Dbega

15、It_____te
yearssi
ceheleftthearmy
Ais
Bhas
Cwill
Dwas
16、MissGree
is
ti
theofficeshe_______tothelibrary
Ahasgo
eBwe
t
Cwillgo
Dhasbee

17、Mypare
ts______Sha
do
gforte
years
Ahavebee
i

Bhavebeer