二次整式的定义

but for的所有意思和用法?but for各种意思后应加名词,动词还是句子之类的…… 英语中的 单数名词 专有名词 在形式及 意义 还有用法上的相同与不同 .举例.不能区分他们不,我看到那本 英语牛津语法 上说的 单数名词是指世界上独一无二的事物 而不是可数名词中的 单 欧巴啥意思? 欧巴是什么意思 Look at sb doing sth不是现在进行词么?如果是怎么没有be动词啊?书上是This group of people playing...Look at sb doing sth不是现在进行词么?如果是怎么没有be动词啊?书上是This group of people playing beach volleyball I'm sorry,Ididn't win the game .Well,that's OK.You___win every time.A.mustn't B.may notC.can'tD.shouldn't(选择并说明） --I'm sorry I can't go to the movies with you.--oh ,that's too bad._____timeA.Maybe ,the other B May be other C Maybe next D Maybe,others 英语介词问题Lucy is hiding ( ) an old house答案不光是behind吧 in one's late years什么时态 one week later还是one week's later?是one week late还是one week's late? in one"s early twenties 与 in one"s late twenties 有什么区别?（one"s是某某人的意思） J Style的中文意思李准基唱的歌词的中文意思 in one's early twenties和in one's late twenties意思是一样的吗?为什么一个是early,一个是late? The little girl is c（）because her left knee h（）badly1、The little girl is c（）because her left knee h（） badly2、Jim,please a（）my question,what is seven p（） ten3、Her mother goes to work by car.（改为同义句）4、母亲 连词成句.gire the was the girl asked because upset hr for advice mother The little girl cried loudly in the darkness because of f__ million的用法millions of 与millions 的区别 -Kangkang did very well in the math test.-That is because he worked () of all his classmates.A.hard B.harder C.hardest D.most hard 题目是这样的：by the time he was ten ,he ( ) very well . You and (she) did very well in the test为什么是she不是her Mark is very _________.He got a good grade in the English exam this time.A.famous B.well-known C为什么选C 为什么 不用HardD hard 在英文里面 I have done 和 I did 的区别比如说,我想和别人说,我昨晚看了一部电影,是一部悲剧电影,我哭了很久,所以现在眼睛都肿了.（说的时间是第二天早上）应该是：I saw a movie last night wich is I have just done it.它是我刚才完成的.或者说‘我刚才完成的.’因为大家都知道是完成的什么.我这样写可以吗? have done和have do区别As the road can't meet the need of trainsport,the government has decided to have our company --------- another one.A.to build B.build C.built D.building请问选择B的原因和have done，have do区别 有关朋友的格言只要格言 语法在实例中的用法. 求 million的用法 million 有哪些用法 请问college students and learning 的英语作文怎么写? learning at high school and learning at college英文作文英文作文~~~~~~~~~~~~~~~~~~~~~标题如上~~~~~~急````````````````能高中 大学的 都写上么？ 最好是英语学习 The advantage and disadvantage of learning English on the net by students at collegecompared with the traditional one taught by the teacher college years should be a wonderful time for students to grow and learn.请问这句话后面 for student to grow and learn should be a wonderful time 是否是 系表结构?