5．在“it is + 段時(shí)間 + since從句”句型中，時(shí)間的計(jì)算一律從since從句的動(dòng)作完成或狀態(tài)結(jié)束時(shí)算起。

　　It is three years since the war broke out.

　　It is three years since she was in our class.

　　It is three years since she lived here.

　　It is three years since I smoked a cigar (=since I stopped smoking a cigar)

　　It is three years since I began to smoke.

　　五、every time, each time, next time, the first time, any time, all the time等名詞短語用來引導(dǎo)時(shí)間狀語從句，表示“每當(dāng)…..，每次…..；下次……”等。

　　Employer to applicant: "In this job we need someone who is responsible."

　　Applicant: "I\'m the one you want. On my last job, every time anything went wrong,

　　they said I was responsible."

　　雇主對(duì)應(yīng)聘者說：“我們需要一個(gè)負(fù)責(zé)任的人”。

　　應(yīng)聘者：“我就是你們要找的人，我上一個(gè)工作每次出了差錯(cuò)，他們都說我負(fù)責(zé)”。

　　Teacher: Bob, can you explain inflation?

　　Bob: Sure. Every time my dad pays the bills, he blows up. That’s inflation[通貨膨脹].

　　老師：Bob，你能解釋一下通貨膨脹嗎？

　　Bob：當(dāng)然。我爸爸每次付帳單時(shí)，他就發(fā)脾氣（爆炸），那就是通貨膨脹。

　　注：blow up：爆炸；發(fā)脾氣。

　　場(chǎng)景再現(xiàn)：演講時(shí)調(diào)節(jié)氣氛：

　　I dont want to brag, but the last time I made the speech it brought the audience to its feet. And they didnt sit down again until they reached their cars.

　　我不想吹牛，但上次我演講時(shí)所有的觀眾都站起來（歡呼），他們?cè)僖矝]有坐下，直到到達(dá)他們的車。