※ 引述《tonyxie (123)》之銘言：
: 請問如何區分，使用以上的助動詞 ?
: 像是will/would 常搞不清楚
: 例如: 離婚將會影響小孩的發展
: 該寫: Divorce will affect Children's development.
: 或 : Divorce would affect Children's development.
: 請教各位高手，謝謝

應該是用will.......畢竟這是一個未來可能會發生的事情!!

首先我們分成兩個層面探討助動詞,一個層面是基本用法

另外一個層面是慣用語法(這部分 有空我會PO上來)

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will would

1. 表示未來式 will的過去式

ex:I said I would do it.
(因為前面動詞以表過去 後面應該用過去式would)


2. 打算;想

ex: I won't make the same mistake again.


3. 有~的習慣 表示過去的習慣

ex : He will often stay up ex: He would often get up early.

all night.


4. 請你......好嗎?? 表示客氣的請求

ex:Would you come in???
(請進好嗎??)


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can的用法:

1.表示能力: ex: He can swim = He is able to swim

PS:在此特別強調 並不是所有的can都可替換成be able to

ex: The book is able to be finish in an hour.........(X)
^^^^^^^^
關鍵在於be able to 的適用對象是"人"或"動物"


2.表示強烈懷疑: ex: Can it be true??? 中文翻成可能....的嗎???


3.用於否定推測:can't ,對於過去否定的推測(即表示當時不可能怎樣....)

cannot have + p.p

ex: He cannot have said so. (他是不可能這樣說的)


4.表示客氣的請求: Could

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另外一提的是should/ought to

1.當作應該的意思, ought to (should)+ 原形動詞

2.若ought to (should)+完成式,即表示當時應該怎麼作 ,但是"沒有做"

ex: He ought to have come yesterday, but he didn't.

(他昨天應該要來的,可是他並沒有來)


3.ought to 表否定時的位置: ought "not" to +原形動詞

ex: You ought not to be cruel to animals.(你不應該虐待動物)


4.ought to表疑問時: ought + 主詞 + to +原形動詞

ex: Ought I to go??(我應該去嗎??)


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呼........很長喔!!看起來眼睛酸了沒.....該休息一下了^___^










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