学帮网"he is good at repairing computers "其中“at repairing computers” 在句中做什成分?
来源：学生作业学帮网 编辑：学帮网 时间：2024/05/30 12:37:29
"he is good at repairing computers "
其中“at repairing computers” 在句中做什成分?
表语的补足语
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be good at 擅长做某事
be good at 是固定短语，意思为"擅长于……", at是介词，后接的repairing computers是现在分词短语作表语。
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he is good【】home 填at对吗?
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