新目标九年级Unit6 Section B Period 1(1a—1e)课件ppt
by mistake与by accident
1) by mistake意为“错误地”
I took her umbrella by mistake last night
because they are the same style.
昨晚我错拿了她的雨伞,因为它们的样式一样。
2) by accident意为“偶然地;意外地”
The idea came to him by accident.
很偶然地他想到了这个主意。
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