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 time.
Step 4 Homework
Finish the exercise on page 62— More about wild animals.。