Unit5Grammar

Grammar Step 1 A Using may for possibility 1 If we do nothing soon there may be none left may 表示猜测 可能性 用于肯定句中或否定句中 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 not do 意为 可能不 Step 2 Exercises In the zoo 1 The elephant is going towards the water It need a bath 2 A little boy is crying when he sees the tigers He be afraid of them 3 I cannot go near the lions and tigers They hurt me 4 The baby panda is staying near its mother It be drinking milk 5 The monkeys are jumping around They be playing with each other 6 The horse is standing with its eyes closed It be sleeping Step 3 B Using verbs to infinitives 1 在英语中某些及物动词后接动词不定式作宾语 常用的此类动词有 agree to do sth 同意干 begin to do sth 开始干 decide to do sth 决定干 fail to do sth 做某事失败 forget to do sth 忘记干 hope to do sth 希望干 learn to do sth 学着干 plan to do sth 计划干 prepare to do sth 准备干 remember to do 记得干 try to do sth 尝试干 want to do 想要干 2 to do 做宾语补足语 ask sb to do tell sb to do invite sb to do want sb to do would like sb to do teach sb to do advise sb to do 但有的动词后跟不带 to 的不定式作宾补 如 hear sb do see sb do watch sb do make sb do let sb do help sb do We don t use to after these verbs 1 enjoy Kitty enjoys dancing 2 let The teacher lets him read loudly 3 practise You should practise speaking often 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