题目内容
20.约翰过去周末常和他的朋友在网上聊天.Johnused to chat with his friends on the Internet at weekends.
分析 used to chat with.
解答 答案:used to chat with.这里是说过去常常,用used to do sth,表示过去常常,表示和某人聊天用chat with,故答案是used to chat with.
点评 三个形似结构:used to do:过去常常 be used to do sth:被用来做某事 be used to doing:习惯于做某事
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