1、Unit 5,Unit 5 Wild animals,A Using may for possibility,Grammar,1. If we do nothing, soon there may be none left!,2. The bamboo forests are becoming smaller and smaller. As a result, pandas may not have a place to live or food to eat.,may 表示猜测, 可能性（用于肯定句中 或否定句中）,may not do. 意为“可能不”,e.g.,1. The story
2、may or may not be true.,2. Can that be true? May that be true? ,3. He cant know the truth. 他不可能知道真相。He may not know the truth. 他可能不知道真相。,Millie is in the zoo. She is telling Sandy on the phone about what happens. Complete what Millie says using may with the words in brackets.,In the zoo,1. The eleph
3、ant is going towards the water.It _ (need) a bath.,may need,2. The little boy is crying because he saw the tigers.He _ (be) afraid of them. 3. I cannot go near the lions and tigers.They _ (hurt) me. 4. The baby panda is not drinking its mums milk.It _ (not be) hungry.,may be,may hurt,may not be,5. T
4、he monkeys are jumping around.They _ (be playing) with each other. 6. The horse is standing with its eyes closed.It _ (be sleeping).,may be playing,may be sleeping,B Using verbs + to-infinitives,1. 当句子中已经有谓语动词, 而我们又要表达不止一个动作概念时, 其余的动词可以使用非谓语形式表达。动词不定式就是动词的一种非谓语形式, 其基本形式是“to+动词原形”。 如：,He wants to pla
5、y football after class. 他想课后踢足球。 My mother forgot to turn off the lights yesterday. 我妈妈昨天忘记关灯了。,注意: 动词不定式在句子中不作谓语, 因此没有人称、数和时态的变化。,动词不定式在句中常作谓语动词的宾语, 这一类谓语动词常见的有: agree choose decide forget hope learn like plan prepare promise refuse remember seem want wish would like,注意： 动词不定式的否定形式是“not to + 动词原形”。
6、如: You must promise not to be late again. 你必须保证不再迟到了。,remember to do sth. 记得去做某事remember doing sth. 记得做过某事,区分,forget to do sth. 忘记去做某事forget doing sth. 忘记做过某事,e.g. Tom, 记得课后和我们一起打篮球。 Tom, remember to play basketball with us after class. 我记得上个月写了一封信给你。 I remembered writing a letter to you last month.
7、,stop to do sth. 停下(正在做的)事去做 (另一件)事 stop doing sth. 停止做(正在做的)事,e.g. 让我们停下来休息一下。Lets stop to have a rest.不要说话。老师来了。Stop talking. The teacher is coming.,区分,1. enjoy Kitty enjoys dancing. let The teacher lets him read loudly. 3. practise You should practise speaking often.,We dont use to after these ve
8、rbs.,4. make The joke makes me laugh and laugh. 5. help She often helps me (to) carry water. 6. finish You must finish doing your homework on time.,1. You must _ (listen) to the teacher carefully in class. 2. Mary agreed _ (go) shopping with Lucy. 3. Look! The boys _(play) football.,listen,to go,are
9、 playing,Exercises,4. May decided _ (buy) a book for Anns birthday. 5. Max tells funny jokes to make us _(feel) happy. 6. Lets _ (go) on a trip tomorrow.,go,to buy,feel,7. The policeman told the boys _ (not play) football in the street. 8. Would you like something _ (drink)? 9. _ (not be) late for c
10、lass again. 10. I plan _(travel) around the world in the summer.,not to play,to drink,Dont be,to travel,11. Daniel hopes _(be) a doctor when he _ (grow) up. 12. I prepare _ (clean) my room this afternoon. 13. Do you want _ (see) a film with me?,to be,grows,to clean,to see,Finish the exercise on page 62 More about wild animals.,Homework,
