为什么能用in there或in here 不是说副词前不能加介词吗

为什么能用in there或in here 不是说副词前不能加介词吗 There is a bird in the tree.为什么用In.能不能用on. I often hear her _____ (sing)in the next room last year.为什么不能用singing? Miss Li came in_______ a book in her hand.为什么要用with,不能用having there are 和are there有什么区别.how many colours there are in a rainbow为什么不能用how many colours are there in a rainbow She__________the success of her three children.答案是took pride in为什么不能用take pride in. there were no more mountains in sight 我想不通为什么用no 不能用not There (was) some interesting news in yesterday's newspaper.请问为什么不能用were? there is little point in doing 为什么point不能用sense 改错There are not many children of her age in where we live.为什么要去掉in i saw her go in there a minute ago 这里there是副词 为什么in不用省略.或者there不是副词么如题. there are 39 students in my class in all,21 (of which) are girls.为什么不能用 of them? There are many trees in this place.这地方有许多树.为什么不能用There is The meeting will begin in fifteen minutes.And there ___ many people in the hall.为什么只能用have been而不能用have had? 期末考~急do you know the girl in a blue one?in为什么不能用wear或其他动词 There is a pencil in her hand.(同义句)（ ）（ )a pencil in her hand. ---what made her sad?---___she failed in the exam A That 为什么是主语从句 为什么只能用 that there her in many are may birthday.连词成句