時間狀語從句時間狀語從句掌握狀語從句的關(guān)鍵掌握狀語從句的關(guān)鍵1.1.準確掌握每一個準確掌握每一個連詞的含義連詞的含義。2.2.注意主句和從句的注意主句和從句的時態(tài)呼應(yīng)時態(tài)呼應(yīng)。狀語從句分類1.表示時間表示時間 2.表示地點表示地點 3.表示原因表示原因 4.表示結(jié)果表示結(jié)果 5.表示目的表示目的6.表示條件表示條件7.表示讓步表示讓步8.表示比較表示比較時間狀語從句？用表示時間的連詞連接一個句子作狀語，這樣的主從復(fù)合句就是時間狀語從句。連接詞：when,while,as,before,after,until,notuntil,since,the moment,each(every,next,the first)time 連接詞類別 作 用asas 從句中動詞是延續(xù)性時，側(cè)重表示主從句動作同時發(fā)生，意為“一邊一邊”when強調(diào)動作的先后性，從句動詞可以是延續(xù)性動詞也可以是非延續(xù)性動詞。while強調(diào)動作的持續(xù)性及同時性，從句常用延續(xù)性動詞。1.1.連接詞連接詞when,while,as when,while,as 的用法區(qū)別的用法區(qū)別用用while,when填空填空：Mozart started writing music _ he was four years old.He visited a lot of places _ he was traveling.She always listend to light music _ she does some cleaning.whenwhileas1.when 從句的主語與主句的主語相同，謂語動詞是be 動詞時，從句主語和be 可以省略e.g.When(she was)walking along the street,she met her class teacher.注意When 的特殊用法2.when 可做并列連詞用，表示可做并列連詞用，表示“就在那時就在那時”相當于相當于and at this/that time。注意注意When 的特殊用法的特殊用法We were having a class when someone broke in.(突然有人闖了進來突然有人闖了進來).We were about to set off when it began to rain.(這時開始下雨了這時開始下雨了)while 的特殊用法的特殊用法 while 可用于對比，意為可用于對比，意為“然而然而”e.g.I prefer black tea,while he likes coffee.PRACTICEPRACTICE1.We were swimming in the lake _ suddenly the storm started.A.when B.while C.until D.before2.He was about to tell me the secret _someone patted（拍）（拍）him on the shoulder（肩膀）（肩膀）.A.as B.until C.while D.whenA AD D2).until/tillHe did not go to bed until he finished his work.（直到直到才才）=Not until he finished his work did he go to bed.注意注意:not until 在句首時主句要倒裝在句首時主句要倒裝表示表示“直到直到為止為止”，在句首或強調(diào)句型中，在句首或強調(diào)句型中，一般用一般用until;在主句后，在主句后，till 和和 until 均可。均可。3).before“還未還未就就”,“不到不到就就”“才才”；We hadnt run a mile before tired.(我們還沒跑到一里就累了）我們還沒跑到一里就累了）Do it now before you forget.I have been teaching here since I graduated.4).after “在在之后之后”He left the classroom after he had finished his homework the other day.前幾天他做完作業(yè)之后離開了教室。前幾天他做完作業(yè)之后離開了教室。He called me after he had finished his work.工作完了之后他給我打了個電話。工作完了之后他給我打了個電話。5).as soon as “一一就就”Ill tell him about it as soon as he comes back.他一回來我就告訴他這件事。他一回來我就告訴他這件事。As soon as he heard the news,he jumped with joy.他一聽到消息，就高興地跳了起來。他一聽到消息，就高興地跳了起來。6).since “自從自從.”，主句常用現(xiàn)在完，主句常用現(xiàn)在完成時，從句常用一般過去時成時，從句常用一般過去時We have been friends ever since we met at school.我們自從在學(xué)校認識至今一直是朋友。我們自從在學(xué)校認識至今一直是朋友。常用句型常用句型“It is/has been+時間段時間段+since從句從句”譯為譯為“自從自從多長時間了多長時間了”It is three years since she joined the army.時間狀語從句其它引導(dǎo)詞：時間狀語從句其它引導(dǎo)詞：the moment,the minute,every time,each time,by the time,the day等，也可引導(dǎo)一個時等，也可引導(dǎo)一個時間狀語從句。間狀語從句。The day he returned home,his father was already dead.Every time I caught a cold,I had pain in my head.The moment I saw him,I recognized him.Practising 1.Ill write to you _ I get there.A.while B.before C.as soon as D.by2.He has lived in the city _ he came back from America.A.when B.before C.since D.after3.We wont leave here _ our teacher comes back.A.until B.since C.after D.as soon as4.I had to finish the picture _ my mother came back.A.until B.before C.after D.while5.John fell asleep _ he was listening to the music.A.after B.before C.while D.as soon as Practising 6.It seemed only seconds _ the boy finished washing his face.A.when B.before C.after D.even if7.We were told that we should follow the main road _ we reached the central railway station.A.whenever B.until C.while D.wherever8.I recognized you _ I saw you at the airport.A.the moment B.while C.after D.once 9.He was about to go to bed _ the doorbell rang.A.while B.as C.before D.when10._I listen to your advice,I get into trouble.A.Every time B.When C.While D.Until