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【篇一】
語法 Grammar in use
表示猜測和推斷的情態(tài)助動(dòng)詞must和can't(2)
must與can't不僅能表達(dá)對(duì)現(xiàn)在和將來的猜測和推斷，而且能表達(dá)對(duì)過去的猜測和推斷——這時(shí)可用 must have been表示肯定的推斷，用can't have been(而不是mustn't have been)來表示否定的推斷，如后面跟進(jìn)行時(shí)則表示對(duì)過去正在進(jìn)行的動(dòng)作的猜測。請(qǐng)看例句：
You must have been driving at seventy miles an hour.
你當(dāng)時(shí)肯定正以每小時(shí)70英里的速度行駛。
I didn't see it. I must have been dreaming.
我沒看見。我當(dāng)時(shí)一定是在胡思亂想吧。
She can't have been 29.She must have been 36.
她那時(shí)肯定不會(huì)是29歲，她一定36歲了。
He can't have been reading. He must have been sleeping.
他那時(shí)肯定不是在看書，他準(zhǔn)是在睡覺。
【篇二】
詞匯學(xué)習(xí) Word study
charge v.
(1)罰款;使承受經(jīng)濟(jì)負(fù)擔(dān)：
He was charged by the policeman for speeding.
他因開車超速而被警察罰款。
(2)要(價(jià));收(費(fèi))：
The hotel charged them ￡ 900 for one night.
飯店向他們索要900英鎊作為住一晚的費(fèi)用。
(3)指控;指責(zé)：
They charged him with murder.
他們指控他犯了謀殺罪。
【篇三】
dream v.
(1)做夢;夢見：
He dreamt about his grandmother last night.
他昨天夜里夢見他的祖母了。
Do you often dream at night?
你晚上經(jīng)常做夢嗎?
(2)夢想;幻想：
She dreamed that one day she would be as free as a bird
她幻想著有一天自己能像鳥兒那般自由。
I once dreamed of becoming a famous doctor.
我曾一度夢想著成為一位的醫(yī)生。
(3)出神;心不在焉;空想：
Don't dream away your life!
不要在想入非非中虛度你的人生。
Sorry, I didn't see the sign. I must have been dream ing.
對(duì)不起，我沒看見那牌子。我一定是思想開小差了。
【篇四】
3.wave v.
(1)招手;揮手示意：
He waved us quiet.
他揮手要我們別出聲。
She waved me goodbye.
她向我揮手告別。
(2)起伏;飄動(dòng)：
The flag is waving in the wind.
旗幟正在風(fēng)中飄揚(yáng)。
She was attracted by the waving sea.
她被那洶涌起伏的大海吸引。