题目内容
5．They often do the housework at weekends．（改为一般疑问句）Do they oftendo the housework at weekends？
分析 他们经常周末做家务．
他们经常周末做家务吗？
解答 答案：Do； do．原句的do表示"做"是一般现在时，主语是they，复数，应借助于助动词do完成疑问句，后再加实意动词原形do；故答案为：Do，do
点评 本题考查的是一般现在时改一般疑问句，主语是第三人称单数时添加does，动词还原动词原形
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