动词be.在表示时间、地点、条件、方式（比较）或让步等的状语从句中，如果谓语含有动词be,主语又和主句的主语一致，或其主语是it,那么从句中的主语和谓语的一部分（尤其是动词be） 往往可以省略，如：

连词+V-ing

When (she was) walking along the river, she met the stranger.

连词+V-ed

He won’t come unless (he is ) invited.

连词+adj/adv

The news will change all our plan, if (it is ) true.

另外，在比较状语从句或方式状语从句中，可根据需要省略相同的成份。

You can jump much higher on the moon than (you jump) on the earth.

2．What food do you think is healthy and which is unhealthy?

该句为“特殊疑问词+do you think+其他部分构成的，用以征询对方的看法或推测等。其中的do you think 是插入语，并不影响全句结构。可以用于这一结构的动词还有believe, imagine, suppose等，如：

Who do you think has got the first prize? 你认为谁获得了第一名？

Which do you suppose will be taken away next? 你认为接下来被拿走的是哪一个？

但是当think, believe, imagine, suppose等用在“think+宾语+to be”结构时，要慎重选择who（主格）或whom (宾格)，试比较：

1）Whom do you think to be the best in our class?你认为谁是我们班最好的学生？

2）Who do you think will be our English teacher next term?你认为下学期谁会当我们英语教师？

句1为“think sb. to be”结构，是对sb.表示疑问。

句2是对I think 后宾语从句的主语表示疑问。

表示建议和提出忠告的方法

  “建议”可以包括两个方面，即表示建议对方做某事和表示建议对方和自己一起做某事，第二种情况在现代汉语中可用“咱们”这个人称代词。“建议”有许多表达方法，有直接了当地提出自己的想法，也有转弯抹角地暗示自己的想法;有随时想起的提议，也有经过周密思考提出的建议。表达“建议”的常用方法有：

1)用“Let’s” 开头的祈使句后面接动词原形，建议对方和自己一起做某事，句尾常常加 “shall we?”，“OK” 等用于征求对方看法的词语，从而使语气缓和得多。例如：

Let’s cross over here while the light's green.

Let’s call it a day now, OK?

Let’s go upstairs, shall we?

“Let's. . . , shall we?” 句型可以和 “Shall we…?” 换用，肯定回答常用 “Yes，let's…” 。例如：

—Shall we listen to some music? —Yes, let's listen to some.

2)用 “Why don’t you…” 句型建议对方做某事，可缩略为 “Why not…?”。 例如：

Why don't you sell the car if you need money?

Why not look in the local paper?

3）用“How/ What about…?” 句型，表达非正式的建议，征求对方意见，多数情况下建议对方和自己一起做某事。例如：

How about a trip to the beach on Sunday?

What about coming across the road for a break?

4)用suggest, suggestion等词汇表示比较正式的建议，在会议和讨论中使用较多，也常用于书面语中。例如：

I suggest a meeting with the new members.

I suggest trying it once more.

I suggest (that) we (should) take the night train.

“劝告”偏重于为对方着想，替对方出主意、想办法，或者是长辈对晚辈、师长对学生、有经验的对无经验的人讲应该做什么或怎样去做。表达“劝告”的常用方法有：

1) “You'd better. . . .”句型表达随便的劝告，口语中有时省略had和主语you。例如：

You'd better take an umbrella. It's going to rain.

Better do it yourself. It's no good depending on others.

2) 用should, ought to, might, could 等情态动词表达责任和义务。例如：

—Please tell me which courses to take in the first term.

—Well, you could take a history course. You might also take art course. You should certainly take a language course.

3) 用advise, advice 等词汇。例如：

I strongly advise you to see the doctor.

My advice is: Go to the doctor right now.

 

Lesson 57 教学设计方案

Step I Lead in

1.Revise illnesses ( headache, backache, toothache, cough, cold, etc)

2.The T will ask the questions to the Ss.

　　1）  If yon are sick or don’t feel well，where do you have to go？

　　2）What does a doctor do when you go to see him？

Step II Watch and Answer

　　l）What’s wrong with Sharon？

　　2）What did she eat the day before yesterday and what did the doctor advise her not to do？

Key: 1) She has got a pain and couldn't sleep last night. 2) She had a green peach and the doctor advised her not to eat fruit that is not ripe in future.

Step III Listen and Answer

Play the t

《下学期 Unit 15 Healthy eating(第3页)》