老师好，《每日邮报》近日的一篇文章中有这样一句话：Homosexuality was decategorised as a mental disorder by the Chinese Psychiatric Association in 2001.对于 decategorise 一词，维基词典指出，词源为de- + categorise ，并未解释其含义。请问为什么要加 ...
1)It's a pity that he should refuse to accept the offer.2)It's a pity that he should have refused to accept the offer.请教老师：
以上2句含义的区别究竟是什么？1）表示“还没有”拒绝，2）表示“已经拒绝”了，是吗？可否说成...
... friend Betsy’s father was a manager at Hough
Bakeries, which, at Easter time, made little bunny (兔子)
cakes for all its stores throughout Cleveland. It happened that the plant
downtown needed eight kids for temporary help during our spring break, for
which I had no plans beyond listening to my...
一般书上都说不定式的否定式是 not to do。如：It was very rude of them not to answer. 他们不予回答是很失礼的。Tell that boy not to get in the way. 叫那孩子不要挡住路。He made up his mind not to say a word. 他打定主意一句话也不说。She begged me not to ...
Some use them to keep a close watch on the demand for their line of work or gather information on compensation to arm themselves when negotiating for a raise.为什么or并列的是不定式to keep和（to）gather，而不能是use与gather并列呢？
...意见”，要使用 a piece of advice 或 several pieces of advice 这样的表达法。请问为什么 advice 是不可数名词呢？是因为它是抽象名词吗？按照中国的习惯，意见就是一条或几条的呀。为何不能用 an advice 或 several advices 呢？
What kind of world is this to bring a kid into?请问to bring a kid into是定语还是状语？感觉像是world的定语，可是为什么和world分开了？为什么不是What kind of world to bring a kid into is this?
...一个人说“You are not receiving any signal here.”学生认为这里的be doing是表示将来的动作，但是查了下进行时表将来的用法，1.已做出的打算。2.命令或决心。所以我觉得这里不该用be doing表将来，而应该用be going to do(用迹象表明会发...
...I would've thought that was pretty clear by now.1)我理解最后这句话的意思是“我本来认为这件事到现在很清楚了”。但我们老师说would have done表示本来该做却没有做时，would是“意愿”的意思，但无法理解这句话和意愿有什么关系，还请...
... are supposed to
be born electricians, carpenters, plumbers and mechanics. When lights fuse,
furniture gets rickety, pipes get clogged, or vacuum cleaners fail to operate,
some woman assume that their husbands will somehow put things right. The worst
thing about the do-it-yourself game is that somet...