Unit 2 Discovering Useful Structures课件-高中英语人教版（2019）选择性必修第三册.pptx

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1、 Unit 2 HEALTHY LIFESTYLE Learning About Language Discover useful structuresDiscover useful structures to-infinitive as the subject选择性必修选择性必修 第三册第三册Lead in 1 To change bad habits is never easy.The Infinitive is the subject of the sentence!The Infinitive is the real subject of the sentence!It took ex

2、tra time to do the job properly.To join the Peoples Liberation Army,it is required for men to shave off their beards.It was not polite to disturb your neighbors with loud musiclast night.4 3 2 What are the functions of the colored parts in the sentences?Find more infinitives in the reading passage.T

3、o prevent harmful habits like these from dominating a teenagers life is essential.It can be easy for some of them to form bad habits.It is not easy to break bad habits.The Infinitives are the subjects of the sentences!Below is a blog entry about eating out and eating at home.Find the sentences that

4、use to-infinitives as subjects and fill in the table below.A Exploring the rulesBelow is a blog entry about eating out and eating at home.Find the sentences that use to-infinitives as subjects and fill in the table below.To-infinitives as subjectsTo eat out was also a social activity,.,it was not th

5、at difficult to make a simple and tasty dish.A Exploring the rulesWhen the to-infinitive is used as a subject,we usually use the preparatory subject at the beginning of the sentence.itA Exploring the rulesBeBe Singular form Singular formInfinitive as the subject of the sentence:Example 1:To help oth

6、ers is our duty.SubjectSubjectPredicativePredicativeExample 2:To get good grade requires a lot of hard work.SubjectSubjectVerbVerbSingular formSingular formObjectObjectPart 1GrammarInfinitive as the real subject of the sentence:It is+adj.+(for sb)to do（describing sth.)(adj:easy,difficult,comfortable

7、,pleasant,light,heavy,dangerous，tiresome,interesting,fit)It is important for everyone to learn English well in our rapidly developing world.It is+adj.+(of sb)to do(descrbing a person)(adj:kind,good,nice,wise,unwise,clever,silly,stupid,foolish,careless,rude,polite,naughty)It is nice of you to give me

8、 such advice.A Exploring the rulesPart 2GrammarIt is+n.+to do sth.(an honour,our duty,a pity,a shame)It is an honour to be invited to contribute to your magazine.It takes/took sb some time to do sth.It takes me quite a long time to understand the meaning of the painting.A Exploring the rulesPart 2Ex

9、erciseIt is important to avoid passive cigarette smoking.important/avoid/passive cigarette smokinguseful/turn to/fitness consultant/for adviceIt will take a nutrition specialist an hour to make a balanced diet menu for you.will take/nutrition specialist/a balanced diet menu/make/an hour/for you.It i

10、s useful to turn to a fitness consultant for advice.illegal/dangerous/take/drugsIt is illegal and dangerous to take drugs.harmful/often/skip/breakfastIt is harmful to often skip breakfast.Join the words to make full sentences using the infinitive.J Join the sentences to make a paragraph.You can add

11、your own sentences if necessary to oin the sentences to make a paragraph.You can add your own sentences if necessary to make your paragraph more meaningful.make your paragraph more meaningful.To keep healthy and get rid of bad habits,sometimes it is also a good idea to get professional help.A nutrit

12、ion specialist will take an hour to make a balanced diet menu for you.It is also useful to turn to a fitness consultant for advice.You can also help yourself with some common sense.For example,it is harmful to skip breakfast too often.It is important to avoid passive cigarette smoking.And,of course,

13、it is dangerous to take illegal drugs too.1 A:Hello,doctor.I want to lose weight,but I just cant seem to do it.What can you do to help me?B:Well,first,its necessary to _what you eat.Cut out all fatty food and sugary drinks,and eat more fruit and vegetables.2.A:I really need to _ a way to exercise mo

14、re.I could use a fitness app,but my phones full.B:So delete a few files.Im sure the app doesnt take up much space.3.A:Before exercising,always do a few warm-ups to_.B:I know.But then I always feel too tired to continue!4.A:Should I go for the pizza or the fried chicken?I hate _ like these.You know w

15、hat-Im going to eat both!B:Wow!Dont eat too much junk food-youll get fat.Ive actually _ to go on a diet,so Ill just stick to the fruit salad.begin with,be in control of,make a choice,decide on,make up ones minddecide on be in control of making choicesbegin withmade up my mindComplete the conversatio

16、ns with the correct forms of the phrases in the box.Complete the article with the correct forms of the verbs in the brackets.Locatedto seeto turnto sitpaintedrangingto inviteto beB Applying the rulesImagine your friend has taken you out to dinner at Sky Buffet.Write a thank-you note to your friend,o

17、ffering 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 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 Ex

18、pressionB Applying the rulesDear Tom,I am writing to thank you for taking me to Sky Buffet.It was so kind of you to invite me and book a table by the window.It was wonderful to see the city scenery and watch the beautiful sunset.I have always wanted to give Sky Buffet a try,and it certainly lived up to my expectations!Do you have any arrangements next weekend?My plan is to invite you over to my home for dinner next Saturday.The view wont be as good as at Sky Buffet but I would like to cook you something special to thank you.Yours,MaryThanks for Listening