Unit1FoodmattersGrammarandusage课件--牛津译林版高中英语选择性必修第一册.pptx

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1、 011. 动动词不定式作词不定式作主语主语，表示表示具体的、一次性的或者表示将来含义具体的、一次性的或者表示将来含义的动作的动作，且谓语动且谓语动词常用单数词常用单数。 2. 动词不定式短语作主语时，为了动词不定式短语作主语时，为了保持句子平衡保持句子平衡，往往用，往往用it作形式主语作形式主语，而将动词，而将动词不定式短语置于句末。不定式短语置于句末。 3. “特殊疑问词特殊疑问词 + 不定式不定式” 构成的构成的不定式短语不定式短语作主语时，作主语时，且且谓语动词常用单数谓语动词常用单数。常见的特殊疑问词有：常见的特殊疑问词有：what , who , which , when , wh

2、ere , why , how 等。等。如：如：02 1. 动词动词不定式作表语，通常不定式作表语，通常说明主语的具体内容说明主语的具体内容。 其主语通常是其主语通常是 aim, ambition, dream, duty, goal, idea, intension, plan, purpose, task, way ,wish 等等表示意向、打算、计划表示意向、打算、计划的词。的词。 不定式作表语通常可以不定式作表语通常可以和主语位置互和主语位置互换换。 2. 某些系动词，如某些系动词，如be（是）、（是）、seem（看起来）、（看起来）、appear（看起来）、（看起来）、prove（证

3、（证明）、明）、turn out（结果）等，后面可以接不定式作表语。（结果）等，后面可以接不定式作表语。其中，其中，除了除了be动词之外，动词之外，seem、appear、prove、turn out后面的表语后面的表语若是以若是以“to be+.”的形式出现，通常可以省略的形式出现，通常可以省略to be。3. “特殊疑问词特殊疑问词 + 不定式不定式”通常与通常与be动词构成系表结构，作动词构成系表结构，作be动词的表语。动词的表语。4. 当主语部分有当主语部分有实义实义动词动词 do 时时 (以及以及do的其他形式时的其他形式时) ,作表语的动词不定式通常要作表语的动词不定式通常要省省略

4、略to (即即“前有前有do, 后无后无to”)。To-infinitives as subjectsTo eat out was also a social activity, ., it was not that difficult to make a simple and tasty dish.Exploring the rules Working out the ruleWhen the to-infinitive is used as a subject, we usually use the preparatory subject at the beginning of the s

5、entence.itTo-infinitives as subjectsExploring the rules Exploring the rules Below is a blog entry about eating out and eating at home. Find the sentences that use to-infinitives as predicatives. To-infinitives as predicatives., my first thought at mealtimes was to eat at a restaurant.My plan is to i

6、nvite my friends over at the weekend .Exploring the rules Working out the ruleThe to-infinitive can also be used as a predicative. It usually comes after the verb .beTo-infinitives as predicativesExploring the rules Rewrite the following sentences using to-infinitives according to the requirements i

7、n the brackets.1. The next dish that the cook will prepare is Kung Pao Chicken. (attributive)2. The preparation of home-cooked meals is easy and enjoyable. (subject)3. Her dream is that she will open a restaurant some day. (predicative)The next dish to be prepared by the cook is Kung Pao Chicken.To

8、prepare home-cooked meals is easy and enjoyable./It is easy and enjoyable to prepare home-cooked meals.Her dream is to open a restaurant some day. Rewrite the following sentences using to-infinitives according to the requirements in the brackets.B 1B Applying the rules4. We will put the potatoes in

9、the pot first in order that they will be cooked quickly.（adverbial of purpose)5. I consider the Soup of the Day as the best option on the menu. (object complement)We will put the potatoes in the pot first (in order) to cook them quickly.I consider the Soup of the Day to be the best option on the men

10、u. Rewrite the following sentences using to-infinitives according to the requirements in the brackets.B 1B Applying the rules Complete the article with the correct forms of the verbs in the brackets.B 2Locatedto seeto turnto sitpaintedrangingto inviteto beB Applying the rules Imagine your friend has

11、 taken you out to dinner at Sky Buffet. Write a thank-you note to your friend, offering to return the favour by inviting him or her to your home for dinner next weekend. Remember to use to-infinitives. Use the expressions below to help you.B 3B Applying the rulesI am writing to I have always wanted to It was so kind of you to I would like/love to It was wonderful to My plan is to Expression