咳咳.这个是直接引语变成间接引语的.默.
原本是陈述句的加THAT
如：He is a good teacher.变成I think that he is a good teacher.
原本是一般疑问句的用if或者whether（有or或者or not只能用whether）然后把疑问句变成陈述句
如：Will he come?变成I wonder if（whether） he will come或者I wonder whether he will come or not
原本是特殊疑问句的用原来的疑问词把后面的句子变成陈述句
如：How many students are there?变成She asked how many students there are.
