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清楚。(8)We have walked three kilometres clear.我們已經足足步行了三公里。三個詞都常與完成時連用。(3)They haven’t finished their homework yet.他們還沒有完成家庭作業(yè)。(5)Have you already had breakfast? 難道你吃過早飯了嗎?(6)You’re not leaving us already, are you? 你不會就要離開我們吧,是不是?2. Have you turned off your radio? 你關掉收音機了嗎?turn off是切斷電源的意思,它的反義詞是turn on。(2)He turned on the radio as soon as he got home.他一到家就打開收音機。so many“太多”,后跟可數名詞的復數形式,so much“大多”后跟不可數名詞。(2)The woman had so much sweet food that she became very fat.那婦女甜食吃得太多,結果變得很胖。(4)Her mother always has so many things to do.她母親總有太多的事要做。do some shopping表示“購物”,do+。(2)She often helps her mother do some washing.她常幫媽媽洗衣服。start, begin都表示“開始”,后可跟不定式或動名詞作賓語?!纠?(1)When Edison was twelve, he began/started selling newspapers on trains.當愛迪生十二歲時,他就在火車上賣報。(3)The ice began to melt.冰開始融化。(5)I started to listen to the other students discuss social problems and soon I began to take part.我開始聽其他學生討論社會問題,但很快我便開始加入。for/in the past/last twelve months/years/days/。(2)She has been ill for the last three days.這三個星期他在生病。7.…but we really hope to have a number one hit some day.但我們真希望有一天會有一首轟動的。some day指“(將來)某一天”。(2)She hopes to visit Wuhu some day.她希望有一天能訪問蕪湖。本句是進行時態(tài)表示將來,表示即將發(fā)生的動作或計劃好的活動以及表示逐漸變化都可用進行時態(tài)表示將來?!纠?(1)Are you staying with us this weekend? 這個周末和我們一起過嗎?(2)He is dying.他快死了。9. So far, it has brought thousands of….迄今為止已經帶動成千上萬的……?!纠?(1)So far, no man has travelled farther than the moon.到目前為止還沒有人到過比月球遠的地方。(3)The weather has been very hot so far this summer.今年夏天到現在為止,一直很熱。through“穿過,通過”,有從空間或物體中間通過之意。past“經過、路過”。(2)We walked past a bookstore.我們路過了一家書店。7