在英语中,"they"的物主代词有两种形式:"their"和"theirs"。"their"通常作为主语、宾语、表语或定语使用,而"theirs"作为代词使用。"their"是复数形式,不能用于单数名词的所有格,而"theirs"不能用于修饰名词的形容词前面。掌握它们的用法能提高英语写作能力。
首先,我们需要明确一点:they的物主代词有两种形式,分别是"their"和"theirs"。这两种形式的使用场合不同,需要根据句子结构和语义来判断。
当they的物主代词作为主语、宾语、表语或定语时,我们通常使用"their"。例如:
- They lost their keys.
- I saw their new car yesterday.
- Their house is very big.
- The students are proud of their teacher.
而当they的物主代词作为代词时,我们则需要使用"theirs"。例如:
- Whose book is this? It's theirs.
- I borrowed their umbrella, but now it's theirs again.
- The red bike is not theirs, it's ours.
在使用they的物主代词时,还需要注意以下几点:
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"their"是复数形式,不能用于单数名词的所有格。例如,我们不能说"the boy's book is their",而应该说"the boy's book is his"。
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"theirs"不能用于修饰名词的形容词前面。例如,我们不能说"their red car",而应该说"the red car is theirs"。
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"theirs"在句子中可以作为主语、宾语、表语或定语,但是"their"只能作为定语。