at home和
in one’s home这两个短语的意思都是“在家（里）”，如果用at，在home前面不能用其它词语；如果用in，在home前面必须用相应的形容词性物主代词。例如：People will have robots in their homes. 人们家里将有机器人。（人民教育出...
When we arrived there, the security guard wouldn’t _______ us in.
A. allow B. permit
书上答案是allow。其解释是：英语习惯上说allow sb in，不能说permit sb in。
我不太明白，这是英语的习惯用法吗？谢谢老师解答！
...道避免重复的改错题，对答案有疑问，求大神解答。This kind of grass can't be seen in any place but in the place that the soil is rich. A. If B. whose C. where D. in which正确答案为C，为什么不可以选D？谢谢！
...今的房价贵多了。The children of the poor couldn’t go to school in those days. 那时穷人的孩子上不了学。上面两句中，these days 前没有用介词 in，但 those days 前就用了介词 in。这两个短语前的介词使用和省略有什么特点和规律吗？
But my diary is good on nature: the first time I saw a fox in the garden in 1986, the first time I saw a fox in the street, the first time I saw fox cubs in the garden, all in excited detail.all in excited detail 这里是不是省略了什么？怎么理解，翻译呢？
关于非限定性分句，Being in peace with the world,还是Being in a peace
with the world,有没有a? 哪种才是对的，我查了词典，词典里大多数都是用的单数.没有复数形式。但是对于单数形式，大多例句都没有a，但是却有一个例句是After years of
wa...
Traditionally, pollination by wind has been viewed as a reproductive process marked by random events in which the vagaries of the wind are compensated for by the generation of vast quantities of pollen, so that the ultimate production of new seeds is assured at the expense of producing much more pol...
1. she looks a sight in that hat! 例句中in that 是充当介词吗？2.She won't last long in that job.例句中in that 是充当介词吗？3. 上课老是讲一个句子说IN是that 后的不及物动词介词的前置，不过例句想不起来了，想问下老师提到的情况...