When是并列连词,意为“就在这时(突然)”相当于and then或and at that time。
他正在街上走着,这时遇到了一位老朋友。
_________________________________________________________.
6. The boys had never come across anything like this and started jumping out of the windows.
come across 偶然遇见/发现(无被动语态)
她在找东西时偶然发现了一些旧信件
She came across some old letters
in the course of her search.
与come相关的短语:
come along
快点,来吧
come back 回来,折回
come from
来自, 从……来
come off从……离开, 脱落
come out出来, 出版
come up走过来, 走近
come over 过来
come to 来到, 结果是
This situation should never have _______. d
A came over
B came up
C came back
D came about
7. Sometimes I wonder how relevant chemistry is to these children…..
① wonder用法归纳:
wonder wh-词+to do
想知道……(常译为“不知道”)
wonder wh-/if+从句
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