助動詞 can could be able to 用法

 

助動詞 can could be able to 用法

「助動詞」就像名字一樣、有幫助動詞意思表現得更完整的功能。沒有助動詞的話，說話者就沒有辦法把他的感情或是意志，判斷等的意思明確表達，所以助動詞在整個句子中也是扮演著重要的角色。

主要的助動詞有下列這些、「can」「could」「may」「might」「must」「will」「would」「shall」「should」「need」。

助動詞 can

 
能力・可能的意思「會～」
 

I can speak English.
=I am able to speak English.
(我會說英文。)

★只能使用「be able to」的句型

I will be able to go shopping tomorrow. (未來式)
(我明天可以去逛街購物。)

I have been able to remember his name. (完成式)
(我還可以記得他的名字。)

I want tobe able to speak English. (在不定詞之後)
(我想要會說英文。)

I could play the piano.
=I was able to play the piano.
(我以前會彈鋼琴。)

I can not（cannot／can’t） speak English.
=I am not able to speak English.
(我不會說英文。)

I could not（couldn’t） speak English.
=I am not able to speak English.
(我以前不會說英文。)

（X）Can you speak English?
(你會說英文嗎？)

（O）Do you speak English?
(你說英文嗎？)

（O）Do you play the piano?
(你彈鋼琴嗎？)

Can you go shopping today?
(你今天可以去逛街購物嗎？)

Can Tom fix the car this afternoon ?
(湯姆今天下午可以幫我修車嗎？)

　　

 
許可「你可以～」

You can drink this.
(你可以喝這個。)

 
請求「可以請你～嗎？」

Can／Could You pass me the book please?
(可以把那本書遞過來給我嗎？)

Can／Could You show me your ID please?
(可以給我看你的身分證嗎？)

 
推測

Even a genius like him can／could make a mistake.
(像他這樣的天才也有會出錯的時候。)

It can’t／couldn’t be true.
(這不可能是真的！)

Can／Could the video of UFO be true?
(那個幽浮的影片是真的嗎？)