1、主格用来作句子的主语、表语。如:
I often go shopping on Sundays.(星期天我常去购物。)
Are they from Brazil?(他们是巴西人吗?)
Where have they gone?(他们上哪儿去了?)
That' s it.(就那么回事。)
It' s he!(是他!)
2、宾格用来作及物动词或者介词的宾语。如:
Who teaches you English this year?(今年谁教你们的英语?)
Help me!(救救我!)
We often write letters to her.(我们常给他写信。)
3、人称代词作表语或者放在比较状语从句连词than或as之后时,可以用主格形式,也可以用宾格形式,口语中大多用宾格。如:
- Who is it?(是谁?) – It' s I/me.(是我。)
4、三个不同人称同时出现,或者主语中包含“我”时,按照“you→he→I”的顺序表达。如:
Both he and I are working at that computer company.(我和他都在那家电脑公司上班。)
– Who will go there?(谁要去那儿?)
– You and me.(你和我。)
5、人称代词it除了可以指人指物之外,还可以表示“时间、天气、温度、距离、情况”等含义,此外还可以作“非人称代词”使用,替代作主语或者宾语的不定式、动名词或者名词性从句。如:
- What' s the weather like today?(今天天气怎样?)- It' s fine.(天气晴好。)
- What' s the time?(几点啦?) – It' s 12:00.(12点。)
It' s a long way to go.(那可要走好长的路。)
It took him three days to clean his house.(打扫屋子花了他三天的时间。)
It is very clear that the public want to know when these men can go into space.(很显然,公众想知道这些人什么时候能进入太空。)
We found it very difficult to learn a foreign language well.(我们发觉要学好一门外语是非常困难的。)