1、He said that he wanted to visit the Great Wall and his father would go with him by that time.
2、The teacher told the students that the ealth goes arownd the sun(客观事实时态不变)
3、The girl said that she was born in Hong kong in 1990
4、The old gentleman often says that time is cfe（经常发生的时态也不做改变）
5、She said to us she would come here tomorru"
6、He said he have studied English since he was young
7、My sister told me that she was going to London in the coming month
8、John said that Mr smith had been here
LZ单词拼写错误不少啊,已帮您改正过来了
PS：不能光告诉你答案,还得教会你以后怎么改才行啊!
直接引语和间接引语的转换一般有以下几种情况：
1) 转述陈述句或感叹句去标点符号和引号,用say that接宾语从句,said后,从句中要作人称、时态等相应的变化.
She said,“I am going to the market.”
She said (that) she was going to the market.
“What an interesting novel!”she said.
She said that it was such an interesting novel.
2) 转述一般或反意疑问句去标点符号和引号.用if/whether接宾语从句,改用陈述句语序.从句中要作人称、时态等相应的变化.
He asked,“You are a native,aren't you?”
He asked (me) it/whether I was a native.
3) 转述选择疑问句,去标点符号和引号,接whether...or引导的宾语从句,改用陈述句语序,从句中要作人称、时态等相应的变化.
He said,“Is this car Mr.Green's or Mr.Brown's?”
He asked (me) whether that car was Mr.Green's or Mr.Brown's.
4) 转述特殊疑问句,去标点符号和引号,由原疑问词引导宾语从句,改用陈述句语序,从句中要作人称、时态等相应的变化.
She said,“Where are you going?”
She asked (me) where I was going.