专题训练(junior).docVIP

1.???? 由连系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: Is he a student?否定句: He is not a student.画线提问: 对he提问: Who is a student?对 a student 提问: What is he? or What does he do? 2. 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. 变否定句时把don’t/doesn’t放在动词的前面。要注意观察动词的形式并对号入座。变一般疑问句和否定句时动词三人称单数形式都要变回原型。 play-----do plays-----does ?例如:肯定句: They play football after school. He plays football after school.一般疑问句: Do they play football after school? Does he play football after school?否定句: They dont (do not) play football after school. He doesn’t’ play football after school.画线提问: 对they/he提问: Who plays football after school? 对play football提问: What do they do after school? What does he do after school?对after school提问: When do they play football? When does he play football? 3、变否定句和疑问时相关词的改变 　　肯定句变否定句和疑问句时，除将谓语变为否定式和疑问式外，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，already改为yet，and改为or等：（一般情况下some用于肯定句，any用于疑问句但在表示建议或希望得到肯定回答时some可用于疑问句，不用变成anyThere are some birds in the tree. 树上有些鸟。 　　→There aren’t any birds in the tree. 树上没有鸟。 　　He likes the girl, too. 他也喜欢这个女孩。 　　→He doesn’t like the girl, either. 他也不喜欢这个女孩。 　　He likes singing and dancing. 他喜欢唱歌和跳舞。 　　→He doesn’t like singing or dancing. 他不喜欢唱歌也不喜欢跳舞。? 针对性练习 按要求改写句子：1.I know the answer.(一般疑问句)????????? ? ______ ______ __________the answer?2.We can see some birds.(一般疑问句) 　______ ______ see ______ birds?3.He designs clothes.(一般疑问句) ?? ______ he ________ clothes?4.There are some flowers on the teachers’ desk.(一般疑问句) ______ ______ ______ flowers on the teachers’ desk?5.There are some apples on the tree.(否定句)There ______ ______ ______ apples on the tree.6.I think he is very old.(否定句)I ______ think he ______ very old.7.These doctors are helpful.(变否定句)______ _______ ______ __________.8.You may have some hot dogs.(一般疑问句)_______ ______ ______ ______ ___ _____?.9.There aren’t any pears in the box.(肯定句)There are ______ pears in the box.10.Th