1
for a little while
表示持续时间。
She stayed for a little while.
她待了一小会儿。
一会儿；短时间
先理解核心含义，再看它在真实句子里的用法。
一会儿；短时间
a short period of time
She stayed for a little while.
她待了一小会儿。
Please wait here for a little while; I'll be right back.
请在这里等一会儿，我马上回来。
After a little while, the rain stopped and the sun came out.
过了一会儿，雨停了，太阳出来了。
Can you lend me your pen for a little while? I need to jot down a note.
你能把笔借给我一小会儿吗？我需要记个笔记。
表示持续时间。
She stayed for a little while.
她待了一小会儿。
表示将来不久。
He will be here in a little while.
他一会儿就到。
表示过去一段时间之后。
After a little while, he fell asleep.
过了一会儿，他睡着了。
动词后直接跟a little while，省略介词for。
Wait a little while, please.
请稍等一会儿。
Not this
I will finish the work for a little while.
Use this
I will finish the work in a little while.
“for a little while”表示持续一段时间，但“finish”是瞬间动词，不能与表示持续的时间状语连用；应用“in a little while”表示“一会儿之后”。
Not this
I'll be back in little while.
Use this
I'll be back in a little while.
“a little while”是固定短语，冠词“a”不可省略，漏掉后不符合英语表达习惯。
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Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use a little while naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
固定短语，作名词使用，指较短的一段时间；常作时间状语。
Dictionary facts from ECDICT.