its和it's.
问题描述：
its和it's.
到底是its my pleasure,its a good idea,还是it's my pleasure,it's a good idea
答
it's my pleasure,it's a good idea
its是指“它的”,而it's一般是it is的缩写.
这两个词组是用it作形式主语,是为了避免主语成分过长.