几乎所有的书上都说be accustomed to中的to是介词，后接动词要用动名词doing，但今天在一本资料上看到说be accustomed to后也可动词原形，是错了吧！请专家们确认一下，感谢不尽！如题
我知道，must be 表示现在，must have been 表示过去，但在具体使用时总是分不清，尤其是常常在该用must have been 的时候误用must be，请专家们指点指点! 谢谢!如题
词典上注明 cloud 是[C,U]，意思就是说，它可用作可数名词，也可用作不可数名词。那到底表示什么“云”是可数的？表示什么“云”又是不可数的？谢谢！类似的好像还有 cake 也是一样，也是注明 cloud 是 [C,U]，它又如何...
例如一下的一个句子，我需要详细的资料shame those who browse but do not reply.这只是其中的把。如题
比如下面两句话，它们有何区别：He wrote saying that he had sold his house.He wrote to say that he had sold his house.如题
There is something wrong with my washing machine.I must have it ( ).A.checkB.checkingC.to checkD.checked如题
You should try ( )the way i suggested,Im sure youd find it much easier.A.to doB.doingC.and doD.and doing如题
we have not fixed the date ( )we shall start our holidays.A.andB.thatC.whenD.which如题
On the graduation ceremony,the president of our university ( )us to go wherever we were needed most.A.called uponB.called upC.called offD.called out如题
The poor little girl has （ ）such a lot of misfortune since her parents passed way.A.gone throughB.gone awayC.gone outD.gone down如题
journal 和 magazine表示“杂志，刊物”时有何区别。如题
下面这题是2013年的江西高考题：I ______ to visit you later that day, but I had to phone and cancel. A. comeB. cameC. am comingD. was coming所给答案是D。为什么只能用过去进行时呢？用一般过去时就错了吗？...
书上都说afraid是表语形容词，只能用作表语或用于名词后作后置定语，但今天在一本书看到说：当afraid本身带有修饰语时，则它也可以用于名词前作定语。书上的例子是：a very much afraid boy 十分胆怯的男孩不知这种...
动词get, gain, obtain, acquire都有获得的意思，它们的区别是什么？百度上可以查到一些，但好像没怎么讲清楚。如题
be accustomed to中的形容词accustomed通常可用哪些副词修饰？请各位专家帮忙归纳总结一下，谢谢！如题
造了个句子：Put the books where they are. 说不行，应该是：Put the books where they were. 我觉得用一般现在时也说得过去。请们指点！如题