not all students take a bus to school,这句话not前为什么不加do?

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not all students take a bus to school,这句话not前为什么不加do?
not all students take a bus to school,这句话not前为什么不加do?

not all students take a bus to school,这句话not前为什么不加do?
这句话的意思是不是所有学生都坐公共汽车去学校.
not all...是一个固定词组,表示不是所有...
如果前面加do 就要翻译成不是所有的学生都坐公共汽车上学吗?

do+not是：不要干什么的意思
not...：不是什么的意思

加do？这句话的意思是并不是所有的学生都是乘汽车去上学，加do什么意思？这里不是祈使句的，再说祈使句的对象是第二人称；加do，就得给all students 给去掉了，或者是......,don't all the students? 但是这样改就改变原意了所以这句前面不加do!

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你说的do是助动词，它的作用在于协助主要动词来表示一句话时态，语态，疑问，否定，语气等。
在这里not是个副词，是用来形容主语名词的，跟动词take没有关系，所以不能加do
最常用的助动词有：be, have, do, shall, will, should, would
具体应用
a. 表示时态，例如：
He is singing. 他在唱歌。
He has got married. 他已结婚。
b. 表示语态，例如：
He was sent to England. 他被派往英国。
c. 构成疑问句，例如：
Do you like college life? 你喜欢大学生活吗？
Did you study English before you came here? 你来这儿之前学过英语吗？
d. 与否定副词not合用，构成否定句，例如：
I don't like him. 我不喜欢他。
e. 加强语气，例如：
Do come to the party tomorrow evening. 明天晚上一定来参加晚会。
He did know that. 他的确知道那件事。

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don't是否定谓语动词的时候才用的，否定名词和形容词不用。

All of us are not students Not all the students like English=()students()English.Some students()like English All the students do not hold the same opinion not,students,the,school,all,bus,to,take连词成语 Not all the students are here同义句 not,students,the,school,all,bus,to,take连词成语英语翻译是Not all students like English还是Don't all students like English还是Not all of students like English The students _____ at school todayA.all are B.are all C.all D.are not Some students thinks that studying English grammar is not helpful___A.not at all B.all C.very D.at all ____do their homework carefullya.no all the students b.not all the students c.none the students d.not every student 为什么选B 为什么选这个 Tak you do not really care中文是什么意思, not all the students found it easy to smile all the time.怎么翻译?急用, not all ,not all of 意思上一样吗?1 我知道not all .,all.not...资料上写的是,部分否定的意思,请问not all students,not all of the students 汉语意思上是一样的吧?2 All of us are not happy 和 Not all of us are happy 这两 not all students take a bus to school,这句话not前为什么不加do? not all students take the bus to school not all的意思是我没有隔开是 not all的意思是？在not all students take the bus to school 中 We are all students 否定式 1 We are all students / We all are students 是否都成立呢?2 We are all students 否定式准确的是?we are not all students / we are all not studentsnot 否定应该放在系动词 are 后面,还是放在 all ---in out class are listening to the teacher carefully（a.Not all students b.Not all the students 定冠词the什么时候用,什么时候不用啊? Not all the students are fond of music.否定词放句首,句子为什么不倒装?