改为一般疑问句:
1)先看句子中有没有be动词(am, is, are),过去式(was ,were)或can,有的把它放在句子最前面,如:They’re happy.→Are they happy?
2)但是第一人称(I,we)和第二人称(you,你、你们)之间的转变要注意:
I am a boy.→ Are you a boy? We are busy.→Are you busy?
I was happy.→ Were you happy? We were happy .→Were you happy?
3)如果句中没有be动词(is,am,are/ was,were),须借助动词do,does(过去式did)
A、先判断句子是否为过去式,是的则句前借did把动词改为原形。
eg: John climbed mountains yesterday.
→Did John climb mountains yesterday?
B、若非过去式,再判断是否为第三人称单数(he/she/it/Mike…),是则把单词改为原形,句前借Dose.
eg: Amy often climbs mountains on the weekend.
→Dose Amy often climb mountains on the weekend?
C、如果都不是以上的形式,则句前借Do.如人称(I/we/you/they/Amy and Tom…)
eg: Amy and Jack get up at 7:00.
→ Do Amy and Jack get up at 7:00?
根据答句写问句的方法:
①用适当的疑问词(who , whose , what , how, how many , when ,why)来提问,
②将剩余部分改为一般疑问句
(如果剩余部分为动词或动词短语,则用do,does,did代替,改为一般疑问句,句前用相应的疑问词。)
如: What does Mike often do on Sunday?
Mike often plays the piano on Sunday.
特殊疑问词有:
what(什么)what colour(什么颜色) what time(几点)
what day(星期几) how(怎样) how old(多大、几岁)
how many(多少个) how much (多少钱) how heavy (多重)
how long(多长)how tall(多高) how big (多重)
why(为什么) which(哪一个) whose (谁的)
where(在哪里) who(谁) when(什么时候)
改为否定句:
方法和上面一样,先找be动词(am, is, are)过去式(was,were),或can,再后加not,其余照抄
不是则判断是否为第三人称单数(he/she /it/ Mike…),是则把动词改为原形,人后加doesn’t,其余照抄
还不是,则人称后加don’t,其余照抄; 句子是过去式时,人称后加didn’t,其余照抄。