8．by chance碰巧，湊巧．
分析 碰巧，湊巧
解答 答案：碰巧，湊巧．
本題是對(duì)短語(yǔ)的識(shí)記能力的考查，注意其用法即可，題目較簡(jiǎn)單．故答案為碰巧，湊巧．
點(diǎn)評(píng) by chance 的用法：
碰巧 偶然，一般接在句子后面
例句：I heard their talking by chance．我偶然聽(tīng)到他們的談話．
I met her quite by chance．我遇見(jiàn)她完全是偶然的．
I won purely by chance．我完全是僥幸打贏的．
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