【文章內(nèi)容簡介】 ng since you left. Where have you been since I last saw you? It is four years since my sister lived in Beijing. 我妹妹不在北京住有四年了。It is five months since our boss was in 。五 知識擴(kuò)展1. It is since從。以來多長時間了(因為since +從句或名詞，表示一段時間)It is five years since we met last 。2. It is +before…(。才)It was a long time before I went to sleep again.It was an hour before(=until) the police arrived.3. 由as soon as, immediately, directly, instantly, the moment, the instant, the minute, 等引導(dǎo)的時間狀語從句。這些連詞都表示“一……就”。例如：I will go there directly I have finished my breakfast. 吃完早飯，我立即到那里去。The moment I heard the news, I hastened to the ，馬上趕到了出事地點。As soon as I reach Canada, I will ring you up. 我一到加拿大，就給你來電話。【注意】hardly(scarcely, rarely)…when / before, no sooner…than相當(dāng)于as soon as之意。主句用過去完成時，從句用一般過去時。當(dāng)hardly, scarcely, rarely和no sooner位于句首時，主句應(yīng)用倒裝語序。例如：He had no sooner arrived home than he was asked to start on another journey. 他剛到家，就被邀請開始另一旅程。No sooner had the sun shown itself above the horizon than he got out of bed to mence ，他就起床勞動去了。Hardly had I sat down when he stepped ，他就進(jìn)來了。He had hardly fallen asleep when he felt a soft touch on his 。六 .由by the time引導(dǎo)的時間狀語從句。注意時態(tài)的變化：在一般情況下，如果從句的謂語動詞用一般過去時，主句的謂語動詞用過去完成時；如果從句的謂語動詞用一般現(xiàn)在時，主句的謂語動詞用將來完成時。例如：By the time you came back, I had finished this ，我已經(jīng)寫完這本書了。By the time you e here tomorrow, I will have finished this work. 你明天來這兒的時候，我將已經(jīng)完成此工作了。七 由each time, every time和whenever引導(dǎo)的時間狀語從句。例如：Each time he came to Harbin, he would call on me. 他每次來哈爾濱，總是來看我。Whenever that man says“To tell the truth”, I suspect that he39。s about to tell a “說實在話”的時候，我猜想他就要說謊了。You grow younger every time I see you. 每次遇到你，見你更年輕了。八 .由as long as和so long as引導(dǎo)的時間狀語從句。這兩個連詞表示“有多久……就多久”。例如：You can go where you like as long as you get back before dark. 你可以隨意到哪里去，只要在天黑以前回來就行。I will fight against these conditions as long as there is a breath in my body! 只要我一息尚存，我就要反對這種境況。地點狀語從句一 地點狀語從句 (adverbial clause of place)地點狀語從句一般由連接副詞where, wherever等引導(dǎo)，已經(jīng)形成了固定的句型，要點: 由連詞where和復(fù)合關(guān)系詞wherever (=no matter where )引導(dǎo).例如：句型1：Where+地點從句，（there）+主句。【注意】此句型通常譯成“哪里……哪里就……”；主句在從句后面時，there可用可不用；如果主句在從句的前面時，一般都不用there。例如：Where there is no rain, farming is difficult or ，耕作是困難的，或根本不可能的。They were good persons. Where they went, there they were warmly weled. 他們都是好人。因此他們走到哪里都受到熱烈歡迎。You should have put the book where you found it. 你本來應(yīng)該把書放回原來的地方。Where the Communist Party of China goes, there the people are ，哪里人民得解放。句型2：Anywhere/ wherever+地點從句，+主句?！咀⒁狻縜nywhere本身是個副詞，但是，常可以引導(dǎo)從句，相當(dāng)于連詞，意思相似于wherever, anywhere引導(dǎo)的從句可位于主句之前，也可以位于主句之后。 而wherever本身就是個連詞，表示“在何處，無論何處”。例如：Wherever the sea is , you will find 。二 知識擴(kuò)展 there is a will , there is a way.有志者事竟成。(諺語)1. It will be mixed school where not all the children are disabled.他將是一所混合式學(xué)校，那里的兒童并不都是殘疾。(在限定性定語從句中對先行詞起著限定作用。) you go , I go too.