arsetc基本结构：主语havehas过去分词do
e①肯定句：主语havehas过去分词其他②否定句：主语havehas
ot过去分词其他③一般疑问句：HaveHas主语过去分词其他④特殊疑问句：特殊疑问词一般疑问句（havehas主语过去分词其他Hehasworkedforusforte
yearsHasheworkedforusforte
yearsBy
owIhavelear
t2500wordsSofarweveo
lydiscussedthefirstfivechapters注意：1现在完成时不能与如：yesterdaylastweekmo
thyearetctwoweeksagoi
1999等时间连用；2在以whe
提问的特殊疑问中不能用现在完成时。另外，ago不能用于现在完成时的句子里，
4
f过去完成时概念：以过去某个时间为标准，在此以前发生的动作或行为，或在过去某动作之前完成的行为，即“过去的过去”。时间状语：beforebythee
doflastyeartermmo
th…etc基本结构：主语had过去分词do
e①肯定句：主语had过去分词其他②否定句：主语had
ot过去分词其他③一般疑问句：Had主语过去分词其他肯定回答：Yes主语had否定回答：No主语had
t④特殊疑问句：特殊疑问词一般疑问句（had主语过去分词其他）
语法判定（1）by过去的时间点。如：
Ihadfi
ishedreadi
gthe
ovelby
i
eoclocklast
ight（2）bythee
dof过去的时间点。如：
Wehadlear
tovertwothousa
dE
glishwordsbythee
doflastterm（3）before过去的时间点。如：
Theyhadpla
tedsixhu
dredtreesbeforelastWed
esday现在完成进行时
概念：在过去某一时刻之前开始的动作或状态一直持续到现在并且还在进行havehasbee
vi
g分词
Ihavebee
teachi
gE
glishfor11years
5
f英语时态练习
1Iwilltellhimassoo
ashe_____backAcomeBcomesCwillcomeDcame2Mary_____o
shoeswhe
she____themAtries…buysBtriesbuiesCtrys…buysDtrys…buies3Thegirlofte
______coldwhe
she______Acathcs…da
cesBcatches…da
cesCcatchs…da
ceesDcatches…da
cee4_____he____himselfthereNoIdo
tthi
ksoADo…e
joyBDoes…e
joiesCDoes…e
joysDDoes…e
joy5_____yourteacher____fromthemveryofte
Certai
lyADo…hearBDoes…hearCDo…receiveDreceive6_____yourmother_____someclea
i
go
Su
daysADoes…doesBDo…doesCDoes…doDDo…do7_____Tom_____toworkhardtohelphisfamilyYeshe_____AHas…x…doesBHas…x…doesCDoes…has…hasDDoes…have…does8Whichteacher_____lesso
stoyoueverydayAdoes…givesBdoes…giveCdo…giveDgives9Smithdoes
otgofishi
go
weekdays_________hedoesAdoeshe…NoBdoeshe…YesCdoes
the…NoDdoes
the…Yes10MrBlackofte
_____fishi
go
Su
days_____heAgoes…does
r