弦长公式

为什么中国战斗机是从歼五开始的?那歼一到歼四呢?还有歼九? 适当形式填空 escape escape doing和escape from 在用法上有甚么区别为什麽没有escape from doing how to escape from a fire(英语作文）急求! to escape I go to school at seven o'clock in the evening.(画线部分提问） ______________ never后要不要跟动词原形 请问never后到底可不可以接动词原形? cleaner和teacher ea画线 发音相同吗? 英语适当形式填空给出一些题,谢谢o(∩_∩)o... 怎么样区别to do和doingIt has set up a commitee (to promote) the "better English".为什么不用promoting try to do try doing 区别.mean to do mean doingtry to do try doing 区别.mean to do mean doing 区别. to do与doing的区别要公式 实在不行把特殊的仔细说明 never 后面是像can一样加动词原形吗?还是随主语而变化? never后为什么不是动词原形 never加动词原形可以标祈使吗? The teacher said that they ______ hard-working students A、are B、were如果把这个句子看成是客观真理的话,可以用are吗?说出理由 write the words they said The teacher said the children in that class were doing welll.write the words they said The teacher said the children in that class doing well.The teacher said ,"The children in this class are doing well(1)Ken said that his p THE TEACHER SAID THAT THEY WERE GOOD STUDENT,为什么WERE不是ARE呢,这不是一般现在陈述事实吗 he said that they were tourists that they were tourists划线提问 过去进行时：was/were+being+done +PP(PP代表什么）? were后为什么还可以加being?The windows and doors came from old buildings around the town that were being pulled down. I hope ____ a model in a few years A.to be B.being C.you to be D.you were doesn't后跟动词原形吗? 那些词后跟动词原形 will后跟动词原形吗那将来进行时 后面还是现在分词呢,不要笑话我哦~ Let后跟动词原形Let's后跟动词原形,那么Let后也跟动词原型? 一 找出画线部分读音不同的单词(每题2分,( ) 1.A.tea B.meat C.weather D.beach ( ) 2.A.一 找出画线部分读音不同的单词(每题2分,( ) 1.A.tea B.meat C.weather D.beach( ) 2.A.back B.fast C.have D.map( ) 3.A.warm B.garden C.mar meat和seat中的ea读音相同吗? A.seat B.bread C.tea D.peach 找出画线部分不同的一个 （都是ea) bread teacher meet me中的ea ea ee e哪个发音不同