3．除了句型的改变外，还有其它的改变：
人称代词的改变：
如：She said, “I did some research.”----- She said that she had done some research. 时态的改变：
如：She said, “This as is very clever.”----- She said that that ad was very clever.
下面列举当动词是过去时态时，时态是如何变化的：
直接引语 间接引语
一般现在时 一般过去时
现在进行时 过去进行时
一般过去时 过去完成时
现在完成时 过去完成时
一般将来时 过去将来时
过去完成时 过去完成时
现在完成进行时 过去完成进行时
注：当陈述一个不变的事实时，时态不变。
如： “light travels at great speed,” he said.---- He said that light travels at great speed. 时间和地点状语的变化：
如：Tom said, “I am working here today.”----- Tom said he was working there that day. 下面列举这种变化的例子：
直接引语 间接引语
today that day/ yesterday / on Wednesday, etc.
tomorrow the next day / the following day / on Thursday, etc.
yesterday the day before / the previous day/ on Tudesay,etc.
next month the month after/ the following month / in July,etc.
last year the year before / the previous year, etc.
a week ago a week before / a week earlier,etc.
4）其它的例子：
直接引语 间接引语
this that
these those
come go
二 间接引语：陈述句，疑问句和祈使句
1．陈述句
1）我们用that引导的名词性从句来陈述一件事。
如：She said, “Advertisements are an important part of our lives.”------
She said that advertisements are an important part of our lives.
2) 除了say之外，还有其它的动词可以这样用：
tell, advise, agree, explain, insist, promise, remind, suggest, warn
如： “PSAs are often placed for free,” the writer said.-----
The writer explained that PSAs are often placed for free.
2．疑问句
我们用whether/if引导的名词性从句来陈述一般疑问句。
