七年级英语 双休日作业班级: 姓名: 等级英语句型变化总结练习1、含有 be 动词 am,is,are 构成的句子:变一般疑问句时把 am,is,are 提到句子的前面,句尾用问号即可。变否定句时直接在 am,is,are 后面加 not 即可。例如: 肯定句:He is a student。 一般疑问句: a student? 否定句: He a student。 肯定句:We are from China. 一般疑问句: from China? 否定句:We from China2. 由情态动词 can, may, should 等构成的句子: 变一般疑问句时把 can, may,提到句子的前面,句尾用问号即可.变否定句时直接在 can, may,后面加 not 即可。 例如: 肯定句: She can swim. 一般疑问句: she swim? 否定句: She swim。 3。 由行为动词构成的句子: 需要加助词 do 或 does。变一般疑问句时把 do/does 放在句子前面. 变否定句时在主语后面加 don’t / doesn't , 谓语用动词原形。例如: 肯定句: They play football after school。 一般疑问句: play football after school? 否定句: They football after school。 肯定句: Tom watches TV every day. 一般疑问句: Tom TV every day?否定句: Tom TV every day.注意:变否定句时相关词的改变 肯定句变否定句时,除将谓语变为否定式外,句中其他词语也可能随之改变:如将 some 改为 any, too 和 also 改为 either, and 改为 or 等:There are some birds in the tree. 树上有些鸟。 →There aren't ______ birds in the tree. 树上没有鸟。 He likes the book, too. 他也喜爱这本书。 →He doesn’t like the book, ______. 他也不喜爱这本书。 He likes singing and dancing。 他喜爱唱歌和跳舞。 →He doesn't like singing ______dancing。 他不喜爱唱歌也不喜爱跳舞。补充练习:根据句后括号内的要求,填入句中所缺的词: 1. I know the answer. (一般疑问句) ______ ______ know the answer? 2. We can see some birds. (一般疑问句) ______ ______ see ______ birds? 3. There is a computer in the house. (一般疑问句) ______ ______ a computer in the house? 4。 There are some flowers on the teachers' desk. (一般疑问句) ______ ______ any flowers on the...