can-和-could-的用法和區(qū)別-在線瀏覽
2025-05-19 23:02本頁面
【正文】 d it.書我看完了可以給你。如：This can39。Can it be true？這可能是真的嗎？二、情態(tài)動詞could的用法1. 表示“能力”或“可能性”，作為can的過去形式。t follow me.他說他跟不上我。如：Who could have taken them？誰會把它們拿走了呢？She couldn39。在這種情況下，could和can是可以換用的，用could時口氣較緩和，用can時不相信的程度更強一些，兩者在時間上沒有差別。如：?/P—Could you let me have your passport?—Yes, here it is.—看看你的護照好嗎？—行，這就是。這時could和can沒有時間上的差別。如：I would certainly do it for you if I could.要是我能做得到，我一定會為你們做這事兒。和1. can的過去式是could，但could 除了可作can的過去式外，還可表比can更委婉的語氣，因此在回答由could 表示請求的問句中，不能用could，但可用can。如：?/PHe could (or was able to) swim five miles when he was a boy.3. be able to有比can更多的形式，如will be able to，have (has) been able to had been able to 等等。如：?/PThey will be able to run this machine on their own in three months.他們過三個月就能自己開這臺機器了。如：He was able to (or managed to) finish the job yesterday。t和wasn39。t able to ?？苫Q。t / wasn39。如：We could/were able to smell something burning in the kitchen.will與would的用法■表示意志或意愿：決心，愿意，……好嗎？We will do our best to save the child. 我們會盡力搶救這個孩子。注：表示請求、建議或征求對方意見時，用Would you…? 比用Will you…?更婉轉(zhuǎn)。She will listen to music alone in her room for hours. 他獨自在房間里聽音樂，一聽往往就是幾小時。■表示要求：一定，必須You will report to me afterward. 你稍后一定要向我報告。I think he would accept the invitation. 我想他會接受邀請的?！鰓ould like表示愿意I would like to have a word with you. 我想同你說句話?！鰓ould與used to的比較(1) 兩者都可以表示過去經(jīng)常做某事，?？苫Q。(2) 下列三種情況要用used to，不用would：◇強調(diào)與現(xiàn)在的對比時；◇在故事開頭時；◇與be, stay, belong, live, like , think, know等狀態(tài)動詞連用時。We used to swim every day when we were children. We would run down to the lake and jump in…我們小時候天天游泳。如：He would sit like that for hours. 他會像那樣一坐就是幾個鐘。has have had（5）同位關(guān)系it was a cold spring morning in the city of london in england．（6）關(guān)于，對于what do you think of chinese food？你覺得中國食品怎么樣？介詞 for 的用法小結(jié)1. 表示“當作、作為”。what will we have for supper? 我們晚餐吃什么?2. 表示理由或原因,意為“因為、由于”。thank you for your last letter. 謝謝你上次的來信。3. 表示動作的對象或接受者,意為“給……”、“對…… (而言)”。watching tv too much is bad for your health. 看電視太多有害于你的健康。如:i usually do the running for an hour in t
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