这是宾语从句么 例如 they won't come .i think 改为宾语从句

应该是：I do not think that they will come.
宾语从句的否定转移
主句是谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等,并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致.
I don’t think he will come to my party.而不能说成I think he won’t come to my party.
我认为他不会来我的舞会.
I don’t believe that man is killed by Jim,is he?
我认为那个人不是Jim所杀的,是不是?

I think that they will not come.
加个连词就好了，先行词需要是动词。

i think (that) they won't come .

I think that they won't come .所谓宾语从句就是宾语部分是一个句子。一般的我们说简单的句子包括主谓宾，例如I like the book,在这个句子里the book是宾语，而改成一个句子比如说I like that he will come.我想让他来。同样的就只是把动词后的单词换成了一个句子，中间加一个连词就好了。明白了吧？...

i think that they will not come .