[误] What was he do over the weekend?

　　[正] What did he do over the weekend?

　　[析] 当句子中有实义动词时，一般过去时的助动词用 did。

　　2. 上星期日下午你踢足球了吗？

　　[误] Did you played football last Sunday afternoon?

　　[正] Did you play football last Sunday afternoon?

　　[析] 过去时态的一般疑问句中，动词的过去式应变为原形。

　　3. 上周我们询问了十个学生在周日做了些什么？

　　[误] Last week, we ask ten students what they did on Sunday.

　　[误] Last week, we asked ten students what did they do on Sunday.

　　[正] Last week, we asked ten students what they did on Sunday.

　　[析] 根据上周这个时间状语，则判断用过去时态，即主(we asked...)从句(what they did on Sunday)都应是过去时，同时句子中的从句只能使用陈述句语序，不能用特殊疑问句的语序。

　　4. 我们经常在课内外练习说英语。

　　[误] We often practise to speak English in and out of class.

　　[误] We often practise spoken English in and out of class.

　　[正] We often practise speaking English in and out of class.

　　[析] practise后只能接动词-ing形式，不能接动词的不定式，而spoken English不是“说英语”，而是“口语”的意思。类似这样的动词还有：finish, mind, enjoy, keep等。