1.人称代词
(1)人称代词作主语用主格，作宾语、表语用宾格，但应注意以下四种情况：
①作主语的人称代词如果孤立地使用于无谓语动词的句子中，或在这种句子中与动词不定式连用，常用宾格。
—Susan，go and join your sister cleaning the yard.
—Why me？John is sitting there doing nothing.
②句子中代词作宾语或宾语补足语时，与所替代的名词在人称、数、格以及意义上一般要保持前后一致。
The thief was thought to be he.(the thief是主格，故用he替代)
They took me to be her.他们误以为我是她。(me是宾格，故用her替代)
③作表语的人称代词一般用宾格，但在强调句型中，被强调部分代词的格不变。
I met her in the hospital.→It was her who I met in the hospital.
④在比较级的句子中than、as后用主格、宾格都可以。如：He is taller than me(I).但在下列句中有区别：
I like Jack as much as her.＝I like both Jack and her.
I like Jack as much as she.＝I like Jack and she likes him，too.
(2)两个以上的人称代词并列，其次序排列原则：
在并列主语中，“I”总是放在最后，排列顺序为：二三 一(人称)。宾格me也一样。
You，she and I will be in charge of the case.
Mr.Zhang asked Li Hua and me to help him.
