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until,before同时用问题(waited...until...before doing)

来源:www.btdpw.com 2024-07-09

Uncle Vernon waited until Piers was safely out of the house before starting on Harry.

我理解在这里before部分等于一个并列句, 等于and then he started on Harry.请问如此理解有没偏差?

不能将一个时间状语从句理解为并列结构。这是原则问题。

until是谓体状语,只修饰waited, 表示wait这个动作的结束时间点。

before引导的时间状语是句子状语,修饰全句,可以移至句首,表示wait和start二个动作之间的先后顺序。这二个时间状语并不矛盾,完全可以出目前同一个句子中。

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