Question

1、come in是什么词性 2、i don't think he is a lazy boy，is he还是isn't he

come in后面可以加地点吗

Answer 1

come in是个短语 ，实在不知道是什么词性。
I don't think he is a lazy boy.是正确的，译为我认为他不是一个懒惰的孩子。
在英语中否定句否定句中的第一个动词。
要是第二种就是这样的一个意思了：我认为他是一个懒惰的孩子。

Answer 2

come in 动词词组
I/ We don't think he is a lazy boy, is he? = I think he is not a lazy boy, is he? (But we don't say so. This is a special negative form. " not" comes in the main clause but "not'" actually makes "is" negative instead of making " think" negative.

Answer 3

come in不及物动词

Answer 4

第一个不太清楚
第二个用is he