could
could 意思是 “could:更客气的请求(Could you ...?),也是 can 的过去式”. could 提出请求比 can 更委婉:Could you say that again. 接续: Could you/I + V ...? · could = past of can
could:更客气的请求(Could you ...?),也是 can 的过去式
A2接续
Could you/I + V ...? · could = past of can
解释
could 提出请求比 can 更委婉:Could you say that again? Could I open the window? 它也是 can 表能力的过去式:I could swim when I was five。和 can 一样不变形、后面不加 to。
例句
Could you say that again?
您能再说一遍吗?
I could swim when I was five.
我五岁时就会游泳。
注意
回答用 can 或 will,不用 could:Could you help me? — Sure, I can。Could I ...? 是礼貌地请求许可。
FAQ
could — 是什么意思、怎么用?
could:更客气的请求(Could you ...?),也是 can 的过去式. could 提出请求比 can 更委婉:Could you say that again? Could I open the window? 它也是 can 表能力的过去式:I could swim when I was five。和 can 一样不变形、后面不加 to。
could — 怎么接续?
Could you/I + V ...? · could = past of can
could — 有什么注意点?
回答用 can 或 will,不用 could:Could you help me? — Sure, I can。Could I ...? 是礼貌地请求许可。