Unit 1 Period Ⅲ Grammar and usage（word教参）-【优化探究】2021-2022学年新教材高中英语选择性必修第一册配套教参（译林版）

Period Ⅲ　Grammar and usage 授课提示：对应学生用书第11页 动词不定式作主语和表语 ①Not that long ago, my first thought at mealtimes was to eat at a restaurant. ②To eat out was also a social activity, allowing me to enhance the relationship with my friends. ③My plan is to invite my friends over at the weekend to show them my new­found skills. ④To hesitate means failure. ⑤It would be wrong for people to marry for money. [我的发现] ①③为动词不定式短语作表语；②④⑤为动词不定式短语作主语，其中⑤中it作形式主语。 不定式由“to＋动词原形”构成，其否定形式是“not to＋动词原形”。不定式可以加宾语或状语构成不定式短语，没有人称和数的变化，但有时态和语态的变化。不定式可作主语、宾语、宾语补足语、定语、状语和表语，但不能单独作谓语。 一、作主语 不定式短语作主语时，往往放在谓语之后，用it作形式主语。 To see is to believe. 眼见为实。 It is right to give up smoking. 戒烟是正确的。 [名师点津]　在“It is/was＋adj.＋for/of sb. to do sth.”结构中，若形容词侧重于评价人物的特性、特征，则构成不定式复合结构的介词应用of，此时形容词常为kind, nice, foolish等词，且sb.与形容词之间可构成系表结构；若形容词侧重于描写不定式动作的特征、特点，则构成不定式复合结构的介词应用for。 It was generous of him to contribute so much. 他捐献了这么多真是太慷慨了。 It is important for us to live a low­carbon life. 过一种低碳生活对我们来说很重要。 二、作表语 不定式作表语多表示某一次具体的、特定的或有待实现的动作。 My dream is to enter Beijing University. 我的梦想是考入北京大学。 Ⅰ.单句语法填空 1．Her job is to take (take) care of the elders and (to) wash their clothes. 2．It takes patience to educate (educate) children. 3．It is typical of him to take (take) hard jobs. 4．Your task for the next few days is to read (read) the adaptation from the novel. 5．It was very hard for me to keep my feet on the ice. Ⅱ.完成句子 1．Our duty is to defend our country from/against (保卫国家不受) its enemies. 2．It is very easy to find fault with (批评) the work of others. 3．It is so nice of you to put up with (忍受) all his tiresome stories. 4．If you're outgoing, it is very easy for you to adapt to the new environment (适应新环境) while studying abroad. 5．Your job is to tick (标出) the names of those present at the meeting. 单独成册　对应学生用书第89页 Ⅰ.单句语法填空 1．The narrator was to blame (blame)for the misunderstanding. 2．Anyhow，it's bad manners to interrupt (interrupt) when someone is talking. 3．To have known (know) you is a privilege. 4．The second principle