she后面什么时候加does什么时候用do?例如she don't know,she doesn't know

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• 九下英语问题一.Every father and mother 谓语动词用三单还是原型?（答案是三单 我个人感觉应该是原型）二.______(compare）with life in the past,life now is more comfortable.（答案给的是Compare,但是Reading中的原句（内容不同 句式相同）用的是compared啊 这两个通用么?）三.I don't know ____iphone 4SA.that she is so crazy about B.why she is so crazy about C.how she is so crazy about但是A为什么不对 难道I don't know后面不能加确定的从句?那英语“抱歉 我不知道你是XXX”还不能说了?）
• 1.It is now four fifteen in the afternoon.Mrs.White flnished her book a quarter of an hour ago.At what time she finished it?What's the next number?2.14,29,88,353,______________________ B.You're welcome!D.It's my pleasure!B.The same to you.D.Me,too.B.What does your mother D.What job does your mother do A.Sorry,I don't know.B.Certainly.Here you are C.Thank you,sir.D.Yes,please.E.None of us.F.You are welcome.G.Yes,she is H.Over there.I.It doesn't matter.
• 1 She doesn't like the childen _playing___(play) in the room .(为什么play要加ing?老师说是后置定语,什么是后置定语?）2.l don't know ___he will come tomorrow,___he comes ,l'll tell you.(D)A.if ,weather B.whether,whether C.if,that D.if,if 3.We must do ____the Party tells us.(C)A.which B.that C.what D.where 4.l can't understand _____(D)A.what does Christmas mean B.what Christmas does mean C.what mean Christmas does D.what Christmas means 5.How _uncomfortably __(comfortable) we
• ..追加50分.改为同义句.1.Where does Linda come from?2.He enjoy playing comeputer games.3.Millie is good at swimming.4.It costs each student $10 to buy the ticket.5.Lisa is short,She can'reach the basket.6.There aren't any parties on October 31st in my school.7.Which season do you like best?8.I don't know much about the Festival.The Festival is called Thanksgiving Day.9.He doesn't often go to school on foot.10.I am afraid he is not here at present.11.My sister
• 哪位英语学得好 快来回答将句子合并成一个句子Is she a teacher?Do you know?Where will we have a meeting?I want to know.I prefer being outside,John says.Does he spend much money on clothing?She doesn't know.How can I get to the park?I don't know.
• 把下列句子主动语态变成被动语态 he bought a new car last week .farmers grow rice in the south.people in england speak english.we play football on the playground every afternoon .people don'T KNOW MARK TWAIN AS A GREAT THINKER .she doesn't punish david for fighting with jack.they don't read the book.do you often see a movie at home in the evening?where do they watch the basketball match every week?what does tom study?today people think it is one of the greatest books
• 用所给单词的适当形式填空：1、Did you read ___(yesterday) newspaper 2、We all like the wallet .We think it's the ___(cool) thing .填入适当的单词：1、That is ___ I gave him yesterday .2、Who has an English newspaper here ——___ one does .3、What did the teacher ask you ___ your father 4、Do you know Cathy ——Yes ,I read her article ___ the school magazine .5、Does Old Mary know that her students don't like her clothes ——Yes ,she doesn't mind ___ young people think of her .
• 现在正在学新概念英语第一册,但是老搞不懂句子中什么要加S例如描述他人说话的时候,什么时候是说SHE SAY,什么时候是说SHE SAYS还有这个东西属于某人的,提问的时候什么时候是说ARE THESE ,什么时候说DOES SHE什么时候要在BELONG后面加S还有提问问题后,说之前发生的事,什么时候用过去式,什么时候用过去分词?DO,DOSE,ARE,DID,CAN分别在提问什么的时候用还有回答的句子什么时候要加S就象提问WHERE ARE THEY FROM回答的时候什么时候说COME,什么情况是说COMES FROM在什么情况下要用WHEN DOES,什么情况下要用WHEN DID正积极学英语,百度悬赏实在是没有,麻烦各位帮忙给我解释下,一做到这些题就很乱
• He thinks his aunt is right.(改为反意疑问句） He thinks his aunt is right.____ ____?我认为应该是：isn't she 是对aunt来做答,并且是否定的,但是正确答案是doesn't he,请问为什么用doesn't 而不是isn't 刚才有人回答对he think提的反意疑问,所以是doesn't he,这个我能理解,可是我看到一个规则,就是I think/know/believe/guess/等词汇,要根据后面的that从句来形成反意疑问句的,还举了三个例子,我就是根据 这个两个例子来做的上面这道题,例1：I know that you don't want to hurt me.do you?例2：I believe that he will try his best.won't he 例3：I don't think that we can spend so much money on clothes,can we?我想问到
• 1、Jim,you look worried.What's wrong with you?为毛worry要用过去式?2、You'd better find a pen pal if you don't get much writing practice.don't后面不是加动词原形吗,为什么write用现在分词形式,还有为什么练习又是原型.顺便 you'd的’d的是什么意思哦!3、It's important for us to learn English well.为什么要用for做连词后面为什么又要用动词不定式4、She doesn't have a pen to write with为什么又要动词不定式而后面还要加上with5、I don't have a partner to practice English with.为毛又要加with6、疑问词+to do sth 小弟膜拜中…………………………全副身家奉上………………再感叹一句，英语超级难学！
• 关于使用matlab写牛顿迭代法计算方程 f (x) = x^3 + 2x^2 +10x - 20 = 0 在区间[1,2]内的一个根的问题.使用牛顿（Newton ）法计算方程 f (x) = x^3 + 2x^2 +10x - 20 = 0 在区间[1,2]内的一个根.以下是我的程序,但是迭代次数居然有31次!牛顿法平方收敛不至于要迭代这么多次.请您帮忙看看是什么地方出错了.function [ x,k ] = Newton( x0,tol,N )x0=1;tol=1.0e-5;N=500;x=x0;x=x0+2*e;k=0;while abs(x0-x)>tol&k
• 已知二元一次方程x+2y-4=0，若x，y互为相反数，则x=_，y=_．