语法复数问题They are not the official name of the country.请问为什么name不是用的复数

语法复数问题They are not the official name of the country.请问为什么name不是用的复数 Those presents are not ours .They are t( ). (相机故障!T_T) do not(缩写形式) where's(完全形式) they are(缩(相机故障!T_T)do not(缩写形式)where's(完全形式)they are(缩写形式)isn't(完全形式)key(复数)no(同音词) where's the bag?I don't knowts is on the dresser?No,it isn't变复数!把包,变包（复数）Where are my book?I don't konw.Are they on the bed?No,thy're not.变复数或者单数!（上面的是复数就变单数,上面的是单数就变复数） -Are they happy-Not they为什么可以用not they 回答第一个问题,而对于“-I don't like this-I not ,either中“I not”这样的说法没有 They are not dangerous, __? 用aren't they 还是are they 写出下列各词的相应形式on(反义词)no(同音词)desk(近义词)take(对应词)don't(完全形式)they are(缩写形式)where is(缩写形式)is(复数形式)math book(复数形式)are not(缩写形式) -Are they happy?—Not they,为什么不是not them?而且为什么可以用not?为什么不用they aren't they are very tired.why [don't they,not they,do they,not to] have a rest are they not 和aren't they 是一样的吗?比如这个例句：are they not the same?(难道它们有所不同吗?）可以说aren't they the same吗?如果可以的话两种分别是什么语法性质?（请重点回答） 语法问题Many parents don't allow their children watching TV while they are doing their homework这句话错在哪里? 语法题,I suppose you are not serious,________?A.do I B.don't I C.are you D.aren't you这个什么情况下用don't ________,I should ask them some questions.A.Should they come to us B.If they come to usC.Were they come to us D.Had they come to usS They are not from the same ( ).（famliy） famliy用什么形式?单数还是复数? They are not in the same class .class用单数还是复数 他们不是德国人 用英语怎么说?They are not Germans.还是German.要变复数吗? They had lunch in the park,（ ）? A.had not they B.did not they C.won‘t they D.are not they如题 问题补充里的英文语法是否有错Teachers that break down barriers and reach into the souls of the students that they are responsible for do not get the recognition or gratitude they have earned. 关于不定式的否定问题 to not 与 not to 区别?-They are quiet,aren't they?-Yes.They are accustomed ___ at meals.to not talking但是参考书上又写说 非谓语动词的否定式均在to前加not 那本题为何在to后加not呢 是不