人教版九年级Unit2知识点详解

（一）课文详解 1、What a great day!(P9) 本句是由what 引导的感叹句。其结构为：What + a /an + 形容词 + 可数名词的单数形式（+主语+谓语+其他） Eg: What a new bike(it is)! What a beautiful girl! 2、But I guess it was a little too crowded.(P9) 1)这是一个含有宾语从句的复合句，I guess 为主句，it was a little too crowded 为省略了引导词that 的宾语从句。在复合句中，当主句为一般现在时时，宾语从句可根据其具体情况使用任意适当的时态。 Eg: I guess he is a policeman. I hear she went to Beijing by plane yesterday. 2)crowded adj.“拥挤的”。常用短语：be crowded with……“被挤满”。crowd v. “拥挤” Eg: The shop near my house is always crowded with people. Hundreds of people crowded into the church. 3、Bill wonders whether they’ll have zongzi again next year.(P9) 1)wonder 此处用作既无动词“想知道”，相当于 want to know. wonder 在不同的句式中表达的意思不相同： 后接 who,what,why等连接词引导的宾语从句及“疑问词+动词不定式”结构时，意为“想知道” Eg: I wonder who that boy is. 后接 if 或 whether 引导的宾语从句时，表示一种委婉的请求或疑问 Eg: I wonder if I could use your mobile phone. 后接 that 引导的宾语从句以及动词不定式短语时，表示“对…感到惊讶” Eg: I wonder to see her looking so cheerful. wonder n.奇迹，奇观 wonderful adj. 壮观的，奇妙的，精彩的 eg: What are the Seven Wonders in the world? We had a wonderful time in the park last Sunday. 2)whether 连词，“是否，是不是”，引导宾语从句，相当于 if。 Eg: He wonders whether / if it will be fine tomorrow. 辨析: whether if 二者都可以引导宾语从句，意为“是否”，一般情况下可以互换。 Eg: I don’t know whether / if she can work out the problem. 二者在引导宾语从句时，whether 可直接与or not 连用，而if 不可以 Eg: I don’t know whether or not I should go. if 可以引导条件状语从句，意为“如果”，而whether 不可以 Eg: If it doesn’t rain tom...