could

could

單字

學習摘要

•
could 是助動詞,後面接原形動詞。
•
它是 can 的過去式:I could swim when I was six.
•
Could you...? 比 Can you...? 更客氣,常用來請別人幫忙。
•
否定是 could not,縮寫成 couldn't。

基本資訊

could
aux.
/kʊd/
主要意義:
1. 能
2. 可以(can 的過去式;客氣請求)

例句

I could read Chinese when I was five.
我五歲就能讀中文了。
Could you open the door for me, please?
可以請你幫我開門嗎?
We couldn't see the stage because the man in front of us was too tall.
前面的人太高,我們看不到舞台。
Could I borrow your notes?
我可以借你的筆記嗎?

其他意義

可能
It could rain this afternoon.
今天下午可能會下雨。

同義詞

was able to
He was able to finish the test on time.
他能準時寫完考卷。

常見錯誤

✗
Could you helping me?
✓
Could you help me?
could 後面接原形動詞。
✗
Yesterday I can't find my key.
✓
Yesterday I couldn't find my key.
說過去的事要用過去式 couldn't。
✗
Could you please to close the window?
✓
Could you please close the window?
could 後面直接接原形動詞,不加 to。
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