【这句话对不对】They are so clever boys.好像没见过so在这里后面接名词复数的用法

【这句话对不对】They are so clever boys.好像没见过so在这里后面接名词复数的用法 THEY WERE SO YOUNG THAT they could not tell anything 这句话对不对 这句话语法上对不对They are in a good mood.还是说They are in good moods They are the teacher这句话对不对?在网上翻译 他们是教师 这句话答案都是They are teachers.那么他们是教师这句话用They are the teacher对不对?我是一个英语自学者. 英语:they are a mess这句话对不对?这里的They 指books 在语法书上看到的：What a mess they are! They are far away from the sea 这句对不对They后面加个are对不对 There are some beef .这句话对不对 they work at a factory这句话对不对 这句英语对不对,it后面不用跟is吗?some textbooks are so out of date that they think it a waste of time to attend classes. they so tall are they are so Good time are for sharing with friends这句话对不对? half the class are girls这句话对不对 what are your favorite vegetable?这句话对不对 We are good boys unless you这句话对不对 请问这句话是否正确,自己写的They adapting to an environment grow up so that they will develop properly until they are mature. 请问这句话是否正确,自己写的!求解They adapting to an environment grow up so that they will develop properly until they are mature. they are so distrustfull of their fellow worker that they are having brainchild stolen这句话应该怎么翻译呢?have+宾语+动词 都有什么情况