新概念3第一课中有句话不明白,the experts were now fully...为什么now可以用于一般过去时?好纠结啊原句是 the experts were now fully convinced taht the animal was a puma.是第一课的

新概念3第一课中有句话不明白,the experts were now fully...为什么now可以用于一般过去时?好纠结啊原句是 the experts were now fully convinced taht the animal was a puma.是第一课的 新概念英语2册43课第一句话.In 1929,three years after his flight over the North Pole,the American explorer,R.E.Byrd,successfully flew over the South Pole for the first time.我有俩个问题：1.successfully flew over the South Pole for the 新概念英语2册43课第一句话.In 1929,three years after his flight over the North Pole,the American explorer,R.E.Byrd,successfully flew over the South Pole for the first time.这个句子前后顺序颠倒,需要前后调动才能变成通顺 请问,文无第一,总听这句话,但是不明白为什么文就无第一,武就无第二? 第一句话是哥伦布发现了美洲,but he e------the continent.填什么单词,好烦. 新概念3 练习The length of the bridge is such that the shape of the the earth.这句话中的such that怎么解释,为什么要这么用?. hold用法?新概念第二册37课第一句：the olympic games will be held in our country in four years' time.这句话说的是将来为什么hold要用过去式? 新概念英语2册34课,第一句话.Dan Robinson has been worried all week.这句话是现在完成时的被动语态,是不是错了啊,不应该用被动啊.新概念英语2册34课,第一句话 The body of one statue was found among remains dating from the fifteenth century B.C这句话来自新概念三里边的课文 是老生常谈了 可是我还是不明白 为什么要用 dating 它在这里是分词 在结构上有什么作用?为什 新概念作文第一届获奖作品 新概念英语第二册40—60课的第一句话的主谓宾都分别是什么 下面新概念英语3有几处不明白,望高手指教新概念英语十五课If fifty pence pieces are not exchanged for sweets中的pieces.Very few of the fifty pence pieces and pound coins I have given him have found their way there中的pieces, I must go to the grocer's这是新概念第一册79课的一句话.我不明白为什么the grocer's 后面为什么要加个's呢? 请教新概念第二册第一课中at的发音各位朋友好；新概念第二册第一课中有这样一个句子：I looked at the man and the woman angrily我在听英音85版和97版的录音的时候没听到at的发音.听了很多遍,难道 新概念英语2册76课问题.请问一下这俩句话有什么区别?1.“To end our special news bulletin, said the voice of the television announcer.2.“To the end of our special news bulletin, said the voice of the television announcer.第一 新概念英语3第一课“A puma at large”新概念英语3第一课的课后习题2,我选择b,但答案给出的是a,但这个答案无法理解.原题：What particular piece of evidence persuaded the experts that a puma had been seen in the vi 新概念3中第一课 A puma at large中,HAVE的用法疑惑新概念3中第一课 A puma at large中,有一句话：As no pumas had been reported missing from any zoo in the contry,this one must have been in the possession of a private collector an The speed email is sent is enormously fast这句话怎么翻译?两个is弄不明白