He looks ill.这句话是什么结构

He stays at home because is ill这句话的问句是什么 He looks as if he ( ) ill for a long time He looks as if he is ill为什么用if 、 he is ill with a cold!关于这句话, He fells ill yesterday.这句话错了吗 He looks _(worry),beacause his son is ill. it looks that he is bored.这句话对吗 he looks younger than his real age 这句话对吗 He has never been heard to speak ill 2到4的单词是什么结构求解 He looks very happy的句子结构 looks like they really like water这句话 结构怎样分析 前面的looks like是it he has not been out today.这句话是什么时态?怎么看的?结构是什么,