現(xiàn)在完成時(shí)的時(shí)間狀語(yǔ)

時(shí)間使用 1與現(xiàn)在有關(guān)的過(guò)去點(diǎn)時(shí)間 recently,lately,already,yet,before,still
2與現(xiàn)在有關(guān)的頻度時(shí)間 ever,never,once,twice,three times,several times,
often,seldom,always,time and time again
3與過(guò)去有關(guān)的現(xiàn)在點(diǎn)時(shí)間 just,now,today,tonight,this week,this year
this morning,this afternoon,this evening,
this month,this May,this October,this November
1若想強(qiáng)調(diào)動(dòng)作從何時(shí)開(kāi)始(ever)since
2若想強(qiáng)調(diào)動(dòng)作持續(xù)了多久for(a day,several months,many years,,how long) for( two hours, six months, quite a long time)
3若想強(qiáng)調(diào)整體的時(shí)間all (morning,night,day,year,these years,my life)all(the while,these days,these ten days)
4若想強(qiáng)調(diào)與過(guò)去有關(guān)到現(xiàn)在的一段時(shí)間up to now,up to the present,till now,until now, so far, in the last few years,in the past 30 years ,these days,these weeks,these years

現(xiàn)在完成時(shí)have done 的時(shí)間標(biāo)志是
in the past few/three years
since + 時(shí)間點(diǎn)/ sb dis
副詞標(biāo)志是
already,yet,never,ever
現(xiàn)在完成時(shí)可以單獨(dú)使用

i have finished homework.
但過(guò)去完成時(shí)不可以單獨(dú)使用

用在“It is the first/second...time+that”從句中

過(guò)去完成時(shí) had done
時(shí)間標(biāo)志
by last year/by the time of

過(guò)去完成時(shí)一般和過(guò)去時(shí)一起出現(xiàn)

sb had done sth before sb did
sb did sth after sb had done

用于hardly when, no sooner than的句式中
we had hardly came home when it rained.

用在“It was the first/second...time+that”句型中

分分分?。。?/div>