首先，请问下对于宾语从句，位于谓语和从句间的that是否确实可以省略？ 其次，如果是的话，对于下面这句话，是否都对，或者哪句错了： I think (that)it quite good for you . I think (that)it is quite good for you. 因为我主要是受到这句话的影响： We thin it wrong that he didn't help her. 这句话it 后面没有be动词，但却是正确的。
We think it wrong that he didn't help her. it是形式宾语，that he didn't help her是真正的宾语。wrong是宾语补足语。正常的语序是We think that he didn't help her wrong. We think it wrong that he didn't help her.这里it前面不能加that。
再说上面两句： I think that it quite good for you 错误。这个it不是形式宾语，而是真正的宾语。it后面的good是宾语补足语。it前面不能加that。因为that只能引导从句，而这里不是引导从句。 I think (that)it is quite good for you.正确。it后面加了is，it is quite good for you就变成一个从句了，是宾语从句。引导词that可以省略。
两句都是正确的。 第一句，对于 it 作宾语， quite good for you 做宾语补足语，也可以理解为双宾语，it是直接宾语， quite good for you 是间接宾语。这是高中一个常见的考点，it 的用法，这里是it做形式宾语的用法。 第二句，是宾语从句，that 引导的宾语从句，it是主语，is是系动词，quite good for you是表语。