I’ve been knocking.I don’t think anybody’s in.我一直在敲门。我想屋里没有人。注意:现在完成进行时表示一种看来似乎是不间断的动作,所以提到做一件事的次数或一共做了多少事情时,不能用现在完成进行时。C 用现在完成时表达的单一动作和用现在完成进行时表达的动作是有区别的:(a)I’ve polished the ...
24. Why won't you stay in USA?My main purpose in USA is only to pursue the PhD degree. First, PhD holdersfrom the USA are much easier to posses an academic position with high salaryin China top universities such as XXX. I will have a bright future in China.Second, my career ...
【选择】D. one 【解析】人称代词 it 指代已知的事物。问话者并未指明是哪家理发店，应答者就不能具体告诉这家理发店在哪里。one 指代同一性质的其中一个，the one 特指上文提到的这类事物。不定冠词a 属于类指，表示同一性质的任一个，相当于 any，所以 a barber shop 的意思是任意一家理发类...
句号在引号里，说明引号里是一个完整的句子。如：The manager said, "If you finish your work, you can leave for home."The teacher often tells us, "The harder you work, the better grades you will get."引号在句号里，说明引号里不是完整的句子，而是单词、短语等。如：I don't know...
You can go where you like as long as you get back before dark. 你可以随意到哪里去,只要在天黑以前回来就行。 I will fight against these conditions as long as there is a breath in my body! 只要我一息尚存,我就要反对这种境况。 二、地点状语从句:地点状语从句 (adverbial clause of place) ...
He is the most careful boy in our class. A. what B. where C. when D. how 28. If it ___ rain,I'll go. A. doesn't B. won't ...The taxi-driver took the man everywhere. He showed him all the parks and museums in the city. In the evening they went back to the hotel(旅馆...
一般疑问句：Is he a pupil？肯定回答：Yes，he is.否定回答：No，he isn't.一般疑问句：Can she dive？肯定回答：Yes，she can.否定回答：No，she can't.一般疑问句 ：Do you like apples？肯定回答：Yes，I do.否定回答：No，I don't.一般疑问句 ：Did you go to the zoo yesterday？...
19. What is the smallest room in the world?20. Teachers write on me with chalk. I can’t talk. What am I ?21. You have it. You read it. There are some words and pictures on it. What is it?22. Sometimes it looks like a boat. Sometimes it looks like a small white...
3、It is a remarkable fact that...双语例句：It is a remarkable fact that the inertial mass of all bodies is, within experimental accuracy, proportional to the gravitational mass.值得注意的是，在实验的准确度内，所有的物体的惯性质量与引力质量都成正比。4、It is worth noting that…双...
4.作定语 There is a little water in the glass.玻璃杯里有一些水。5.作状语 I can't find my book anywhere.我在任何地方都不能找到我的书。修饰不定代词的词,一般情况下要后置.一般不定代词用法例子 1.some 一些,某些,某个 不定代词some可以代替名词和形容词,常用在肯定句中作主语、宾语、定语 等。