初中英语定语从句语法中,引导词①只用that的情况有哪些 ②不用that的情况有哪些?

只用that的情况
1.当先行词是everything,anything,nothing （something 除外）,all,none,few,little,some等不定代词时,或当先行词受every,any,all,some,no,little,few,much等词修饰时.如：
Have you set down everything that Mr Li said?
2.当先行词被序数词修饰时.如：
The first American movie that I watched was the Titanic.
3.当先行词被形容词最高级修饰时.如：
This is the best museum that I have visited all my life.
4.当先行词被the very,the only,the first / last等修饰时.如：
She is the only person that understands me.
5.当先行词前面有who,which等疑问代词时.如：
Who is the man that is standing in front of the crowd?
6.当先行词为人与动物或人与物时.如：
Look at the man and his donkey that are walking up the street.
不用that的情况
1.在非限制性定语从句中只能使用关系词which,不能使用关系词that
2.在“介词+关系代词”引导的定语从句中,只能使用关系词which,不能使用that