Unit 21 Body language教案
p：certainly. there you are. here, please take my seat, you look a bit tired.
o：thank you. yes, i'm not feeling well today. i think i have a bit of cold. could you please tell me when we reach long street? i'm afraid i can't see where we are when the bus is this crowded.
p：sure. i' ll let you know when we get there.
p：shall i help you with that?
o：no thanks. i can manage it myself. but could please let me sit down for a while? i'm not feeling well.
p：oh, of course. please take my seat.
o：thank you. that's very nice of you.
p：not at all.
step 5 language points
1.keep my eyes open使眼睛睁开着
★ keep跟带形容词的复合结构，例如：
①good food keeps you healthy.好的食品使你健康。
②please keep the boy quiet.请让这男孩安静。
★ 另外keep还可以跟带分词、介词短语、副词的复合结构。
①she kept we waiting outside.她让我在外面等着。
②he kept his eyes shut and stayed where he was.他闭着眼睛待在原地。
③if your hands are cold，keep them in your pockets.如果你手冷，把它们放在口袋里。
④the cold weather kept in doors.寒冷的天气使我们待在家里。
2. be sure of/to do.
①he is sure of success = he is sure that he will succeed.
②he is sure to succeed= he will certainly succeed.
③i'm sure of the fact.我确实相信这件事。
④.be sure not to forget.千万别忘记了。
3. can you tell how they are feeling today by the way they sit or stand? （warming up）
★ tell在句中作“说出，判断，看出”解，常与情态动词can / could连用或用于不定式结构中。如：
it was so dark that i couldn't tell that it was you. 天太黑了，我认不出那就是你。
it's difficult to tell when it will be finished. 很难说得准何时完成这项工作。
★ 另外，与之相关的短语有：tell apart意为“把……区分开”；tell from（by）意为“从（以）……可以看出”；tell ... from ... 意为“把……与……区分开来，分清……，区别……”。
i really can't tell which is which by their appearances.
我从外表实在看不出哪个是哪个。
i can't tell jane from sarah （=tell jane and sarah apart） — they look so alike.
我分辨不出简和萨拉，她们长得太像了。
4. the customer said “i don't want to talk” by avoiding eye contact. （listening）
★ avoid 意为“避开，避免”，为及物动词，后可接名词、代词及动词-ing形式。如：
i avoided him as much as possible. 我尽量避开他。
they all avoided mentioning that name. 他们都避免提及那个名字。
she braked suddenly and avoided an accident. 她紧急刹车，避免了一场事故。
5. interested adj. 感兴趣的
（1） he looked interested. 他看起来很感兴趣.