名词变复数规则
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名词变复数规则:名词n:万物的名称,包括人或物的名字。
名词的分类:1.可数名词[c] 2.不可数名词[u]
1.一般名词复数是在名词后面加上“s”,如map→maps,bag→bags
2.以s, sh, ch, x等结尾的词加“es”,如bus→buses, watch→watches
box—boxes dish---dishes等;
3.以辅音字母+y结尾的词,变y为i加es,如baby→babies
city—cities story--stories等;
以元音字母+ y结尾的名词变复数时,直接加s变复数,如monkey→monkeys,
boy--boys, storey→storeys(楼层);
4.以f或fe结尾的名词变复数时:把f或fe 变成v再加ves的名词有: half→halves
knife→knives leaf→leaves wolf→wolves
wife→wives life→lives thief→thieves
5.以o 结尾的名词变复数时:在有生命的名词词尾加es
potato→potatoes tomato→tomatoes
无生命在词尾加s
photo→photos ,piano→pianos, radio→radios, zoo→zoos
常见不规则,可数名词变复数形式:man---men woman—women foot—feet
tooth—teethgoose(鹅)----geese child---children mouse—micesheep—sheep
fish---fish chinese—chinese
deer---deer(鹿) zoo-----zoo/zoos
重点:1. I love sheep (sheep是复数,泛指)
2. This is a deer (单数)
3. these are deer (复数)
解析:在英语句子中,可数名词单数形式,常与某一限定词搭配出现,限定词常不能单独使用,如无限定词,该名词常以复数出现。
例: I like dogs
I qlike a dog (限定词:a, an, this, that, the, your)
一般疑问句
一般疑问句是疑问句的一种。它是指用yes或no来回答的句子。
其结构是:系动词be/助动词/情态动词+主语+其他成分
Are you from Japan﹖
Yes I am. / No I'm not.
Can you speak French﹖
Yes I can. / No I can't.
Does he work in a bank﹖
Yes he does. / No he doesn't.
1.将陈述句变为一般疑问句时,如句中有be 动词(am/ is/ are)时,可直接将它们提至主语前。如主语为第一人称,应将其改为第二人称。
如:I'm in Class 2Grade 1. → Are you in Class 2Grade 1﹖
2.陈述句中有情态动词(can may must …)时,也可直接将它们提至主语前,即可成为一般疑问句。
如:He can swim now. → Can he swim now﹖
3.一般动词的一般疑问句,也要借助助动词do/does,第三人称单数用does,其余人称用do。其句型为:Do/Does + 主语 + 动词原形+其它?
如:I like these animals. → Do you like these animals﹖
She wants to go to the movies. → Does she want to go to the movies﹖
4.一般疑问句一般读升调(↑)
5.一般疑问句有时不用yes或 no 回答。如:
Are they in town now﹖ I think so.
May I sit here﹖ Certainly.
Does he like soccer﹖ Sorry I don't know.