1.She's not answering the
doorbell. She must not be at home.请问must not表推测时，可以缩写为mustn't吗？话句话说，mustn't是不是只能用于表“禁止”，不能用于表推测？ 2.No one else could have
done it – it had to be Neville.If Bley was aboard, he had
to have hea...
...略呢？as，since, because是否可以省略呢？比方说：Since weather permits, we can go outside playing
basketball.是否可以改成：Weather permitting, we can go outside playing
basketball.问题二：She stood at the street corner, with her hands in her pockets.这句话中的with+N+...
这句话是在一部英文小说上看到的，原文是：As they grew, the Sporemounds consumed more and more, their hunger and
need to expanding knowing no end主要是后面半句，我可以理解这句话的意思，但是看不懂语法结构。如果主语是 their hunger and need to
expand...
...take a break of about 15
minutes during each hour of (play/playing).During
the Northern Song Dynasty, Bi Sheng invented moveable type of printing after
numerous (tests/testing).以上2句，都是关于介词后面使用名词，还是动名词？第一句答案是play，但是，是否也可以填...
Economy The process or system by which goods and services are produced, sold, and bought in a country or region以上定义来自韦氏高阶词典问题：这条定义当中的by which能否替换成where作为”抽象性地方名词process/system”的关系副词去自行理解。常用的关...
..., meaning it involves purchasing, engineering, supplier quality
assurance, the supplier, and other related functions working together as one
team, early on, to further mutual goals.请教各位老师：to further mutual
goals目的状语，early on时间状语，那么working together
as one team在...
He’s not the most sophisticated businessman you’ll ever meet, but he’s no greenhorn.
句子分析：you’ll ever meet 应该是修饰名词 businessman 的定语从句，但这个定语从句为什么用了一般将来时而没有用一般过去时或者现在完成...
“It is the 21st century now and we are in a society where people live a relatively comfortable life.” So begins Jim’s composition.
请句中的 So begins Jim’s composition 算倒装句吗？不倒装是不是应该这样写：Jim’s composition begins so. 谢谢！...
课本原句如下：There are only 24 hours in your day, jus the same as everybody else’s. So how do you end up time-starved, frustrated, and behind in your work?请问，behind在这里是副词吗？那么可以说end up behind in your work？如果 behind 作副词，...
Moreover, demographers see the continuing shift south and west as joined by a related but newer phenomenon: more and more, Americans apparently are looking not just for places with more jobs but with fewer people, too. 此外，人口学家还发现，人口向南和向西的不断迁移又与...
陈述句的强调句It was him that /who I saw on the street last night. 虽然我知道这是强调句的固定公式，不过这应该和定语从句没什么关系吧？not...until句型的强调句普通句：He didn't go to bed until his wife came back.强调句：It was not until hi...