Question

that从句是否可以省略？

Answer 1

that是不可以省的，但有时,引导表语从句的连词that可以省略

1. 连接词that一般不能省略，但当主句中含动词do的某种形式时，that可以省略。如：

What I want to do is (that) I can go up to him and thank him. 我想做的事是走到身边去感谢他。

2. 当句子的主语是：advice, demand, decision, desire, idea, insistence, instruction, order, plan, proposal, recommendation, request, requirement, suggestion, wish等名词时，表语从句须用虚拟语气，即：should +do。如：

My advice is that you should go to apologize to him. 我的建议是你应该去向他道歉。