Unit 1 Grammar 学案2023-2024学年牛津译林版九年级英语下册

Unit 1 Asia Grammar 一．It做真正的主语 It作人称代词 指代动物或无生命体 Look at the panda, it is so small. Another famous attraction is the great wall. It runs for over 6000 kilometers across northern China. 指代小孩不明性别 My aunt will have a baby soon. She hopes it will be a girl. Look at that cute baby over there. It's a boy, isn't it? 指代身份不明的人 ---Who was calling you on the phone just now?--- It was my cousin. 指代倩文中的动作，情景，或看法 Riding around the countryside is popular in Guilin, isn't it? Tourists like to take a boat trip along the Lijiang river. It is great fun. 注意：①指代人时与he和she辨析 Who is knocking at the door? It's me. Lucy is knocking at the door and she wants to see you. it主要指代身份不明或者未确定的人，she/he则指代已知或身份明确的人。 注意：②指代物时与one辨析 It指代前文提到的同名称的，同一个事物，it可指代可数名词单数，也可指代不可数名词。 One指代同名称中的同一类食物，既可指代人也可指代物，但只能代替可数名词单数，复数形式为ones You promised to write a novel.You must finish it. Your skirt is nice and I want to buy one like yours. It作非人称代词 指时间 Look at the panda, it is so small. 指日期 It's the first January today. It's New Year's day. 指天气 It is raining heavily outside. /In Beijing, it is cold and windy in winter. 指距离 It is two kilometers from my school to my home. 指环境 It was very noisy in the park. 二.It做形式主语 基本用法：当不定式，动名词，从句等用作主语时，避免头重脚轻，通常在句首使用形式主语it，而把真正的主语治愈句末。 Getting on well with neighbors in your neighborhood is very important. It's important to get on well with neighbors in your neighborhood. 1.It's +adj+( for/of) sb. to do sth. ①It be adj. for sb. to do sth. adj.通常为描述事件的形容词：easy,difficult,hard,necessary,possible,important,polite,dangerous,legal等 ②It be adj. of sb. to do sth. adj.通常为描述人的形容词：kind,nice,rude,cruel,thoughtful,careful,clever,foolish,stupid,wise,crazy等 2.It is adj./n. to do sth.&It is adj./n. that从句 It's a waste of time to play computer games all day. It's amazing that there are so many rocks in unusual shapes in the cave. It is a pity that she failed in the exam again. 3.It is of +n.(抽象名词) to do sth It is useful to master more words to im