题目内容
10．当李娜获得网球比赛冠军时，我们都忍不住欢呼起来．All of uscouldn't help cheering up when Li Na became the world champion in the tennis competition．
分析 couldn't help cheering up
解答 答案：couldn't help cheering up．根据中英文对照后得知这里缺少忍不住欢呼起来的表达，忍不住做某事，用can't help doing sth，欢呼用短语cheer up，故can't help cheering up，再者这里的从句部分became是过去时，故前面也应时态呼应，故用can't的过去式couldn't，故答案是couldn't help cheering up．
点评 本题需要对照中英文得出固定句型，最后要看看整个句子是否有语法错误
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