marylikesstrawberries怎样改为否定句?
she does not like
Tom doesn't like strawberries.
汤姆不喜欢草莓。
首先否定句是 Mary doesn't / does not like strawberries .然后句意是 玛丽不喜欢草莓。
一、解析
首先这句话没有be 动词也没有情态动词,然后根据 likes 判断主语是第三人称单数,并且是一般现在时。所以否定句在实意动词 likes 前面加入助动词 doesn't ( does not ),动词还原为 like 所以否定句是
Mary doesn't / does not like strawberries .句意是 玛丽不喜欢草莓。
二、拓展——变句思路
(1)有 be ,be后面加 not
例一: He is my uncle .(他是我的叔叔)
这句话里面有be 动词 is,否定句在 be 动词 is 后面加not,is not 可以完整写,也可以缩写为 isn't
即 否定句:He is not / isn't my uncle .(他不是我的叔叔。)
(2) 有 can,can后面加 not
例二: She can dance .(她会跳舞,)
这句话里面有情态动词 can,所以否定句在can 后面加 not ,can not 可以完整写,也可以缩写为 can't
即 否定句:She can not / can't dance .(她不会跳舞。)
(3)无 be 无 can找实意动词,前面加don't 或 doesn't,此时动词需要还原
例三: She wants to go to the park .(她想要去公园。)
这句话 dances判断句子一般现在时,并且第三人称单数,所以实意动词 wants 前面加入找动词 doesn’t ,动词还原为want
即 She doesn't want to go to the park.
(4) and 变成 or,some 变成 any 。
例四:I can do some housework.
这句话里面有情态动词can,否定句情态动词can后面加not,也可以缩写成can't,some变成any,
即 I can't / can not do any housework (句意:我不会做家务)
三、拓展训练
1 I am a student.
否定句:I am not a student.
2 She likes cats.
否定句:She doesn't / does not like cats.
原句:Mary likes strawberries.(玛丽喜欢草莓。)
改为否定句:Mary does not like strawberries.(玛丽不喜欢草莓。)
陈述句变一般疑问句的方法:
1、be动词的疑问式:
be动词根据不同的时态和人称可以有am, is, are, was, were等不同形式,可用作连系动词和助动词,构成疑问式时,应将be的适当形式置于句首:
I am feeling better today.我今天感觉好多了。
→Are you feeling better today? 你今天感到好些了吗?
He was late for the meeting.他开会迟到了。
→Was he late for the meeting? 他开会迟到了吗?
2、have的疑问式:
have根据不同的时态和人称可以有have, has, had等形式,有以下3种用法:
(1)用作实意动词表示动作,如表示吃、喝、拿、收到等,疑问式时不能将have提前至句首,应借助助动词do, does, did,且置于句首:
He has lunch at the company. 他在公司吃午饭。
→Does he have lunch at the company? 他在公司吃午饭吗?
I had a nice time at the travel. 旅游中我玩得开心。
→Did you have a nice time at the travel? 旅游中你玩得开心吗?
(2)用作助动词构成完成时态,其疑问式总是将have等置于句首:
I have finished my homework.我的作业做完了。
→Have you finished your homework? 你的作业做完了吗?
(3)用作实意动词表示状态,如表示有、患病或用于have to表示“必须”等,疑问句可直接将have, has, had置于句首,也可根据情况在句首使用do, does, did:
I have to finish the work so late. 我必须这么晚下班。
→Have you to finish the work so late? 你必须这么晚下班吗?
He has something to do.他有事要做。
→Does he have anything to do? 他有什么要做的吗?
3、实意动词的疑问式:
一般实意动词的疑问式,通常根据不同人称和时态在句首加助动词do的适当形式,如:
I watch TV every evening. 我每天晚上都看电视。
→Do you watch TV every evening? 你每天晚上都看电视吗?
I took part in the party last night. 我昨晚参加聚会了。
→Did you take part in the party last night? 你昨晚参加聚会了吗?
4、情态动词的疑问式:
情态动词的疑问式通常是将情态动词置于句首:
You must meet me at once. 你必须马上见我。
→Must I meet you at once? 我必须马上见你吗?
I can cook. 我会做饭。
→Can you cook? 你会做饭吗?
回答和翻译如下 :
Mary doesn't like strawberries .
玛丽不喜欢草莓 。
( 如上句子,已经修改为了否定句
句子的形式 。)
Mary doesn't like strawberries.
Mary doesn't like strawberries.