it的用法、there_be句型_英语学习.docVIP

It的用法、There be句型 一、指代作用。It作句子的主语。 （一）It指前面已经提到过的人或事物。 1. What’s this? — It’s a chair. 2. Who is it? — It’s me. 提示：it代替上文提及的原物(复数用they)； one指代上文提及的、泛指的可数名词单数（复数ones）； that指代上文提及的定指的可数名词单数或不可数名词（复数those）。 （二）It指时间、季节。虚义。 1. What time is it? — It’s nine. 2. It’s time to go to school. Let’s go. 3. What day is today? — It’s Saturday. 4. What is the date today? — It is Oct. 1st. 5. What season is it? — It is summer. （三）It指气候。虚义。 1. It is cold in this room. 这个房间很冷。 2. What’s the weather like today? — It’s fine. 今天天气怎么样？ 天气很好。 3. It often snows in winter in Harbin. 哈尔滨的冬天经常下雪。 （四）It指距离、情况等。虚义。 1. It is five kilometers from my home to the school. 从我家到学校有五千米。 2. It is very near from this shop to that. 从这个商店到那个商店很近。 3. It is a long way to the sea. 这离海很远。 4. Is it well with you? 你身体好吗？ 二、It作形式主语。 动词不定式、动名词短语、从句在整个句中起主语作用，而这一部分用词较多，因此用it作为形式主语，放在句首。 （一）It + 谓语 + 动词不定式 形主 真主 1. It is difficult to climb a mountain. 爬山是很艰难的。 正常形式：To climb a mountain is difficult. 2. It is a good habit to do morning exercises. 做早操是个好习惯。 3. It’s important to study English. 学习英语很重要。 （二）It + 谓语 + 动名词短语 形主 真主 1. It is dangerous playing with fire. 玩火是危险的。 2. It is no use learning without thinking. 学而不思则罔。 3. It is wrong arguing with your parents. 和你的父母吵架是错误的。 （三）It + 谓语 + 名词性从句 形主 真主 1. It is pity that you didn’t see that good film. 你没看到那部好电影真可惜。 2. It is said that he will be late today. 据说他今天会来晚。 整理：It is / was difficult (easy, hard, important, useful, possible, a pity, a pleasure…) to do sth. 三、It作形式宾语。 It作形式宾语，代表其后所说的真正的宾语。 1. I find it not so difficult to learn a foreign language. 我发现学习一门外语并不难。 2. I remember I put it in my bag that the book I bought in Beijing. 我记得我把我在北京买的书放在书包里了。 四、用于表示强调的句型中。 1. It was here that I first met him. 我初次与他见面就在这儿。 2. It is English that Jim teaches us every Monday. Jim每个周一教我们学习英语。 五、用于某些习语中，虚义。 1. Keep at it! 别松劲！干下去！ 2. You’ll catch it! 你可小心点儿！ 第二部分 There be 句型 概说：T