he is a good boy named tom 这是简单句么,不是主句加从句么?还有阿佛加德罗常数的单位为什么是mol的负一次,为什么不是mol/个么

( )a good looking boy he is! He is a good boy.(感） He is a good boy.改为感叹句 改错：What good a boy he is! He is a good boy ( )shool I b()what he said.He is a good boy. 英语翻译( )good boy he is John is a good boy.He a( ) helps his classmates. He is as a good boy as Tim.为什么要用as a good boy as? he,a,is,good,boy连词成句 he is a good boy.改成一般疑问句怎么改? he is a good boy(改为一般疑问句) He is a good boy表语是什么吖 He is a good boy（改否定句） Nam Dan is a w---------- and he usually w------- novels. __he is very good at numbers.A.Small boy as he is B.A small boy as he is He is a boy He is ( )boy that we all like him Asuch good a Bso good a Cso a good Dsuch good