请观原句：None of these answers really explains why the century-long decline inworking hours has <gone into reverse> in America but not elsewhere.请问 reverse 此处作可数名词义，为何其前无 a呢？
If you twist your legs or feet, pointing away from the rest of the body in a position known as plantar flexion, your calf muscles can become shortened.请教专家老师：pointing away from the rest of the body in a position known as plantar flexion这个现在分词短语在句子中的语法作...
both...and...的否定式、not
either ...or ...、no …and no…的否定式的区别如：You can’t speak both German and
English.Both my father and my mother aren’t doctors. She isn ’t either a student or a teacher.
... change her mind? 是什么使你的妻子改变了主意？He
ordered the work to be started at once. 他命令马上开始工作。He
expected her to go with him. 他期望她同他一起去。They
invited her to go for a walk. 他们请她一起去散步。Ann
warned me to read the instructions. ...
...句中，省略“主语+be”If (he is) given more time, he will do the work better. 如果给更多的时间，他会做得更好。Unless (you are) here, you
can't find this kind of plants. 除非在这里，其他地方你找不到这种植物。If条件句是省略最经常、省略形式最多...
...ickland had forgotten that she had ever done anything so
disgraceful as to work for her living. She had the true instinct of the nice
woman that it is only really decent for her to live on other people's money."They're
here now," she said. "I thought they'd, like to hear what you had to
say about th...
...room. 她一进屋便注意到了他。
As soon as I get through with my work I’ll join you. 我工作一做完就来找你们。
As soon as he entered, he sensed a tension in the air. 他一进去就感到了气氛的紧张。
He hurried to see her as soon as he heard she was ill. 他...
One in four cancer patients actually report engaging in some risky behavior,to try to save them cost. 四分之一的癌症患者报告称，为了节省成本，他们有过一些危险的行为。 So either skipping refills of medications or even splitting doses. 要么略去续药环...
Anyone interested in joining the club should contact us at the address below.有意加入俱乐部者请按下面的地址和我们联系。老师，interested in joining the club 如果分词，说不通；是形容词短语作anyone的后置定语吗？一般遇到什么问题才会用逻辑方法...
...一本教材上看到一段话：If you want to know more about trees, join our "All about
trees" talk at 4 p.m. on 26 October.We will interview Dr Jones about the lives of trees and their major
uses.请问这句话中用了join而不是joinin，talk我理解是谈话或讲座之类的活动，但...