高一英语人教版必修四第三单元语法讲解+答案

Book4 Unit3 A taste of English humour 语法：v–ing 形式作表语，定语和补足语 Step1： Lead-in 寻规找矩：请找出下面句子中的 v–ing form. 并说出分别充当什么成分。1.Mr. Smith’s hobby is walking in the morning, and he knows, walking in the mornings is a good habit for an old man. 2. There is a problem facing Mr. Smith. He is old, so he has to use his walking stick when he takes a walk around his house. 3. There is a good swimming pool near his house. When he was young he likes swimming and fishing there. 4. He found many people visiting the place so early. 5. His wife is good at cooking. Today, he found her cooking at the kitchen, so he took out his own drinking cup, waiting for his breakfast. 6. It was a small book explaining how to cut the death rate from having and caring babies. Step2: ing 形式(动名词和现在分词)作表语 1. –ing 动名词形式作表语时放在系动词之后，用来泛指某种动作或行为，以说明主语的身份、或情况。(动名词作表语，主语和表语位置通常可以互换) 如：Her hobby is painting. 她的业余爱好是画画。 My job is looking after the children. 我的工作就是照顾这些孩子。 2. ing 分词形式做表语时具有形容词的作用，用来描述主语的性质或特征以及所处的状态。如：His concern for his mo