Judy arrived in Boston and wrote to her parents at

发布时间：2021-02-28 02:07:42

Judy arrived in Boston and wrote to her parents at once.=Judy wrote to her parents

网友回答

从语法上来说是可以的,但是此处肯定填as soon as比较好.
因为填when的话就只是说明了写信的时间点是到boston之后,而在上一句中强调的是“at once”一到boston就立刻写信的意思.所以考点是用as soon as
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