...一碰到时态上的改变，我就转不过弯来了。整句话：Your math instructor would have been happy to give you makeup examination had you gone and explained that your parents were ill at that time.虚拟语气里面的宾语从句为什么不是（should）be ill，难道是因为句尾...
... and services for American households.而额外产生的1万亿美元商品和服务中有一半会表现为美国家庭的消费品和服务。问：数量单位词：hundred ,thousand,million等，要么“数词+数量单位词的单数后不用of", 要么用 "数量单位词复数+of " , 这里 ...
...es
Scout can complete before its battery needs to be recharged. Though the initial
tests are being conducted with a human for the company, the robot will be
autonomous in the future. Its location, however, will be tracked at all times -
if someone attempts to steal Scout, Amazon employees will be in...
New Yorkers waited at newsstands for the morning papers to arrive while anxious relatives gathered at streetside morgues holding pictures of the disappeared.译文: 纽约市民在报摊边等着早报到来，焦急的亲属们聚集在路边停放尸体地方的周围，手里举着失踪者的照...
...？是修饰系动词还是修饰其后的表语？比如：He is always late for school.He is always at home at the weekend.He is always a kind person.He is always here when the weather is fine.如果换其他的副词呢？比如：He is very much like his mother.等。
For minutes at a time this kind of thing would be running through my
head 请问这里为什么用for来搭配进行时？我的理解是would be running through my head是一种习惯性的动作。然后for minutes at a
time具体的指每一次这个动词持续了几分钟。在我的理解里...
...nbsp;stepchildren.Mr. Chen will give us a talk on the history of England.on和about还挺好区分的。但是of和about的区分感觉很难。比如：a story of adventureI like reading books about farm animals.为什么不能是 a story about adventure或者knowledge of&n...
...ked and robbed by a
gang of youths. 有一妇女遭到一群青年的袭击和抢劫。The witness said he saw five youths outside the
shop. 那个目击者说他看见有5个年轻人在商店外面。b. 用作集合名词，表整体（可指男女青年），用作主语时谓语可用单数或...
讨论的句子:it is too early to tell if the calves will make good candidates to be returned to protected areas of the wild.语境:The adorable female calf is the second black rhino born this year at the reserve, but it is too early to tell if the calves will make good candidates to be returned to...
1. This is the
cat's house.此句中 the 和cat’s都是中位限定词，为什么能同时使用？2. “We have about forty post offices in the city,” says the old man. “Which
one do you want to go?”此句中go后面为什么不加to?3. In an hour, we can travel to places ( ) would...