Unit 3 第2课时 Using language（备课件）-【上好课】高二英语同步备课系列（外研版2019选择性必修第一册）

Unit 3 Faster, higher, stronger Using language -ing形式作主语 1 Contents Part 1 Studying the rules Part 2 Practice Read and pay attention to the words in red. What do they function? 1．Earning enough money to support her son’s treatment was her goal. 2．Swimming without arms sounds difficult for me. 动词­-ing形式作主语 1．v.­ing形式作主语表示抽象的经常性的意义。 Reading aloud is very important for us to learn a foreign language. 大声朗读对我们学习一门外语是很重要的。 Going to bed early and getting up early is considered to be a good habit. 早睡早起被认为是一种好习惯。 2．v.­ing形式作主语时常后置，此时须用it作形式主语，用形容词或名词作表语，但这类形容词和名词较少，常见的形容词有：enjoyable，good，hard，worthwhile，nice，useless，worth等。常见的名词或名词短语有：no use，no good，fun，hard work，a hard/difficult job，a wonder，a waste of time等。 The dictionary is of great use. It is worth buying. 这本词典很有用，值得买。 It's no good waiting here. Let's go home. 在这儿等没好处，咱们回家吧。 动名词和不定式做主语的相同点 1.不定式短语和动名词做主语时，常常为了保持句子的平衡，用it来做形式主语，如： It is not easy to learn English well. It is no use asking him for help. 2.如果主语用了不定式,表语和宾语也要用不定式;主语用了动名