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seen 26. Mr Black __________ in China since five years ago. A. lived B. has lived C. lives D. is going to live 27. We ____________ trees last Sunday. So far we __________ over 3,000 trees there. A. planted; planted B. planted; have planted C. have planted; planted D. have planted; have planted練習(xí)答案: . 1) yet, yet 2) already 3) yet B. 1) since 2) since 3) since C. 1) have been 2) has gone, Has, been, has been 3) have been, have been 2. BDACA ADBDC CDDBC ABCDB DCADC BB現(xiàn)在完成時(shí)與一般過去時(shí)的區(qū)別現(xiàn)在完成時(shí)與一般過去時(shí)都表示“動(dòng)作已經(jīng)發(fā)生”,但不同點(diǎn)在于:hasFrenchthreeHeFrenchthreeWhotakenbag?couldn39。findHetheroomclean,hecleaned因?yàn)樗呀?jīng)打掃過了。(2)現(xiàn)在完成時(shí)不可與表示過去的時(shí)間副詞連用,而一般過去時(shí)則可以。HedonewashingHesomeyesterday.already多用于肯定句,表示一事實(shí) 意為 已經(jīng) 早已 had been released already since then.自那之后他就被釋放了。ve already had the exam.我們已考過試了。t had my car repaired yet and I anxiously need to repair ,我急需修好它。例如:havetheIthethreeago.(強(qiáng)調(diào)是三天前,而不是別的什么時(shí)候看的電影)Greenboughtnew格林先生買了一臺(tái)新電腦。Mrboughtnewyesterday.(強(qiáng)調(diào)的是格林先生買新電腦的時(shí)間是昨天)時(shí)間狀語不同yet,ever,before等副詞以及“for+段時(shí)間”,“since+過去時(shí)間/從句”等時(shí)間狀語連用;而一般過去時(shí)則常與“段時(shí)間+ago”,justyesterday,week等表示過去時(shí)間的狀語連用。ShelivedsinceyearsShehereyearsHebeentheforwroteletterhislast1