Do you think 作为插入语的情况有两种：
1、如果在疑问句中，do you think紧跟在疑问词/短语之后，且其后的成分采用了陈述句序的话，此时它就是插入语。例：What do you think you can do? 你认为自己能做什么？其中，What为疑问词，而you can do为陈述句序。
2. 如果do you think在从句中使用时，则必须改成you think。例：I‘d like to talk with the boy who (you think) is the cleverest student in your class.
注意：如果不是上述两种情况，则不是插入语。例：Do you think he is a student? 其中he is a student是宾语从句。
扩展资料：
英语中插入语的使用：
1、形容词或形容词短语作插入语
worst still, sure enough, strange, most important of all等。
例句：Strange, there is nobody in the classroom.
翻译：很奇怪，教室里没人。
2、副词或副词短语作插入语
personally, honestly, fortunately, luckily, for us, though, besides, exactly, surely, frankly, still otherwise 等。
例句：Luckily for you, I happen to have the key.
翻译：你真幸运，我正好带了钥匙。
3、介词短语作插入语
of course, in short, as a matter of fact, by the way, On the contrary, on the other hand, in my opinion, in conclusion等。
例句：On the contrary, we should strengthen our ties with them.
翻译：相反，我们还应加强和他们的联系。
4、现在分词短语作插入语
generally speaking, judging from/ by ..., talking of..., considering...等。
例句：Considering his age, he did very well.
翻译：从年龄考虑,他干得挺不错.
5、过去分词短语作插入语
例句：Painted white, we like the house better.
翻译：漆成白色，我们更喜欢这房子。
解析：之所以称它为插入语，是由于这种过去分词是独立的，没有逻辑主语。
6、动词不定式作插入语
to be sure, to be frank（坦率地说）,to tell you the truth（说实话）,so to speak（可以说）等。
例句：To be frank, I don’t quite agree with you.
翻译：坦率地说，我不太同意你的意见.。
7、代词词组作插入语
all the same（尽管如此）,all told（总共）,all in all（总的来说）等。
例句：All in all, her condition is greatly improved.
翻译：总的来说,她的情况有很大好转.
8、 句子
I say /hear, I think /hope / believe, you know / see, what’s more, that is (to say), I’m afraid, do you think / suppose等。
例句：It’s a great mistake, I think, not to accept their proposal.
翻译：我认为，不接受他们的建议是个很大的错误。
9、从句
if so / not / any, if I may say so, if you don’t mind, as you know, as you say 等。
例句：This man, as you know, is good for nothing.
翻译：正如你所说的，这个人是一无所长。
10、用标点符号引导插入语
例句：He was (strange as it seems) an excellent sportsman.
翻译：他（尽管还显得令人不解）是个出色的运动员。
区别一：Do you think 放在句子中的位置不一样，做宾语从句时放句首，做插入语时放疑问词后面，不放句首。
例：
1.Do you think you can climb that steep cliff? 你以为你能爬上那座悬崖峭壁吗？（宾语从句）
2.What do you think will happen next? 你认为接下来会发生什么？（插入语）
区别二：Do you think 后跟宾语从句时，that 引导的句子可省略that，做插入语时不能省略疑问词。
例：
1.Do you think this hat and your coat go together? 你认为这顶帽子和你的衣服协调吗？（宾语从句）
2.How do you think that war broke out? 你认为那场战争是怎样爆发的?(插入语）
区别三：do you think 作插入语，可以省去，不影响句子意思，只需要调整句子的语序而已。做宾语从句时不可以省略。
例：
1.Who do you think will win the first prize? 你认为谁会获得一等奖?（去掉do you think，意思不变）
2.Do you think a cure will be found for cancer? 你觉得能找到治疗癌症的方法吗？（不可以省略）
本回答被网友采纳例：What do you think you can do?你认为自己能做什么?
其中,What为疑问词,而you can do为陈述句 语序.
宾语从句
例：Do you think he is a student?
其中he is a student是宾语从句本回答被提问者采纳
do you think也不能作宾语从句啊？只能做主句。主句一般都是句首。