Question

【小题1】He taught in this school last year.(把last year改为 since last year)
He _________ _________ in this school _________ last year.
【小题2】They didn’t clean the classroom yesterday.（改为被动语态）
The classroom _________ _________ yesterday.
【小题3】We have already returned the books.（改为否定句）
We _________ __________ the books ___________.
【小题4】Rice is grown in China.（划线部分提问）
_________ is rice ___________?

Answer 1

【小题1】has taught,since
【小题2】wasn’t cleaned
【小题3】haven’t returned,yet
【小题4】Where grown

解析【小题1】把last year改为 since last year，时间由时点变为时段，那么时态也就相应的由一般过去式变为现在完成式。
【小题2】被动语态的结构是 Be+动词过去分词，而且句式是一般过去式。
【小题3】现在完成式的否定结构是has(have)后面加not, already与肯定句式连用，yet与否定句式连用。
【小题4】对地点的提问用疑问副词where。