yes,but it's not my coat.()Su Hai's

yes,but it's not my coat.( It's )Su Hai's.
不明白的再问哟,请及时采纳,多谢!go ()the study()have a lookgo (to)the study( to)have a look 去书房看看。后面为什么还用to了表示去书房的目的，用动词不定式 to do 结构还是不怎么懂 we're late ()schoolwe're late ( for )school. be late for school 上学迟到能告诉我为什么要用for吗 而不用at我已经解释了呀 be late for 迟到