情態助動詞真的有點小難，因為同一個字可以用在不同地方，所以容易混淆。不過多練習一定有幫助。首先要知道他們用在什麼地方，再來注意日常生活聽到的是不是跟學到的依樣，有機會的時候把他們用出來，這樣就會記住了。

 

最近很懶散的潔西要好好振作一下了，有關文法的問題的話，歡迎提問，會盡力回答。 看影片或許會比較清楚，有不清楚的地方。

 

 

 

情態助動詞用來表示說話者的態度，比方說某些事是可能發生的，必須的，適合的，要求許可的等等。很多時候情態助動詞有不同的用法。

 

情態助動詞：can, could, may, might, must, ought to, should, will, would, shall, had better

 

情態助動詞片語：be able to, be going to, be supposed to, have to, have got to

 

A Ability 表能力：can, could, be able to          

a can 用來表示體能，常與感官動詞連用，表示已經學會的技能，表可能性，非正式時表允許。否定

是 cannot 或 can’t。

I can do 50 push-ups.   sit-ups

She can see the tower from here.

They can speak French.

You can easily find a good restaurant in Taipei.

You can give me a call before 9 p.m.

He can’t play basketball.

What’s in the soup? I can taste something funny.

 

b could 表示過去的能力，否定是 could not 或 couldn’t

I couldn’t speak English when I was little.

She could ride a bike when she was 7.

 

c be able to 可以用再現在，過去，未來。現在式多用 can ，而不用 be able to 。表達過去 could 跟 was/were able to 都可以，未來跟不定詞後面用 be able to 。

He’s able to swim.

He can swim.

My parents weren’t able to use the computer a year ago.

My parents couldn’t use the computer a year ago.

I will be able to finish it on time.

He wants to be able to ski.

練習一：填入 can, could, be able to，儘可能用 can 跟 could 。有些句子是否定的。Longman P118

1 Steve is enjoying his computer class. Two weeks ago, he _________________ even use the mouse, but now he _________________ edit his homework. By next week, he _________________ do research on the Internet.

2 Eva misses her family in Greece. She _________________ visit them for years, but they just got an e-mail account, so now they _________________ keep in touch daily.

3 I _________________ understand how to set up a presentation. The software instruction don’t help. I think I’ll take a professional development course. In a few months maybe I _________________ make that presentation.

4 Mike and I _________________ get along since we started this business. He _________________ work alone (he needs people), and I _________________ work in a group (I have to work alone). I hope we _________________ work out our problems soon.

 

 

Longman – Grammar Express

1 Steve is enjoying his computer class. Two weeks ago, he ___couldn’t______________ even use the mouse, but now he _____can____________ edit his homework. By next week, he ___will be able to______________ do research on the Internet.

 

2 Eva misses her family in Greece. She ___hasn’t been able to ______________ visit them for years, but they just got an e-mail account, so now they _____can____________ keep in touch daily.

 

3 I _____can’t____________ understand how to set up a presentation. The software instruction don’t help. I think I’ll take a professional development course. In a few months maybe I ___will be able to ______________ make that presentation.

 

4 Mike and I __haven’t been able to_______________ get along since we started this business. He ______can’t___________ work alone (he needs people), and I ___can’t______________ work in a group (I have to work alone). I hope we __will be able to _______________ work out our problems soon.