It最基本的用法是人称代词主要代表刚提到的东西以避免重.pptVIP

* It 最基本的用法是人称代词，主要代表刚提到的东西以避免重复。 Look at that car. It’s going much too fast. Where is the car key? ---- I put it in your drawer. 也可以代表抽象的东西。 It’s all my fault . 也可以指动物或未知性别的婴儿。 What a beautiful baby， is it a boy? How about the baby? ---- I’ll take care of it. 还可代表一个彼此都知其何所指的东西。 Where does it hurt? If he doesn’t come, I can’t help it. You have saved my life. I shall never forget it. It 可以表示“是谁（在某处或做某事） “Who’s that?” “It’s me.” It’s your mother on the phone. “Why, it’s you!” she cried. It还可以用来泛指某件事 Isn’t it awful! It doesn’t matter. it 有时并不指具体东西，而指天气、时间、环境、距离等， 称为非人称代词it. It’s raining. It’s Tuesday today. It’s quiet here. It’s two miles to the beach. 非人称代词it ：It 用于代替指示代词： 替代词one, ones, that, those, it, this, that one, ones, that, those That替换单数可数名词或不可数名词；one只替换单数的可数名词。 The vase on the left is more beautiful than the one on the right. The coffee produced in Brazil is more famous than that in Mexico. That只用于替换表示事物的名词， 而one/ones替换表示人和表示 事物的名词皆可。 His younger sister is taller than the elder one. I need the plastic bags, not the paper ones. The computers in our school are connected to the Internet while those in their school aren’t. The football players on our team seem to be more energetic than those on your team. That/ those一般用于替换有定冠词的名词；one/ones用于替换有 不定冠词的名词。 The style of the building is similar to that of a temple. A CD player made in Japan costs more than one made in Hong Kong. That/ those一般不带前置定语，但必须有后置定语。One/ones 都可。当替换词的后置定语用所有格的of短语或当替换词被 所有格修饰时，不用one/ones而用that of/those of. I like the vase better than the one / that in another shop. The windows of your flat are cleaner than those of mine. A grandparent’s job is easier than that of a parent. 2) it, this 和 that 都可以替代前文已提到的事或情况，细微差别在于it不如其余 两者那么强调。 So she decided to paint the door pink. It upset the neighbours a bit. So she decided to paint the house pink. That really upset the neighbours, as you can imagine. 当前面提到的事物