以下情況不可省略:
1.that引導(dǎo)主語從句、表語從句、同位語從句時(shí)不能省略。
2.賓語從句不止一個(gè)時(shí),不能省略 如;they complain(that)they have to do homework from morning till night,that it is hard to study good,that they are very tired.是連續(xù)的賓語從句時(shí),第一個(gè)可省,后面都不行。
3.賓語從句與主語之間有插入語時(shí),不可省。如:the teacher said,happy and firmly(插入語),that we must do homework.
4.引導(dǎo)賓語從句是一個(gè)主從復(fù)合句。如:i belive that if i work harder,i will pass the exam.