文档介绍：★If you study hard, you will get good grades.
REVISION:
真实性的条件状语从句:
主句用将来时,if引导的从句用一般现在时。
(主句和从句的位置可以互相换置)
虚拟语气的条件状语从句:
主句:主语+would+do+其它
从句:If+主语+done(were)+其它
(主句和从句的位置可以互相换置)
★If I had lots of money , I would buy a big house.
★I would buy a house ,If I were you.
What does he do?
He is a teacher.
What do they do?
They’re students
If you are a student , you must study hard. Yes or no?
If you are a student , you must finish you homeworker on time. Yes or no?
情态动词:
must, can, could, may, might.
情态动词+动词的原形
Eg: We must do our homework.
Unit 5
It must belong to Carla.
Section A
Guessing games
What does she do?
She could/might be
a/an______
She must be a teacher.
teacher
\nurse.
What does he do?
He could/might be
a ______
He must be a doctor.
worker
\famer
\doctor
He is a doctor.
Grammar Focus
表示推测的情态动词
在英语中,表示对某件事物的确定程度,即表示推测的时候,我们通常会用到以下情态动词.(情态动词+动词的原形)
must, can, could, may, might.(肯定)
can’t, couldn’t. (否定)
must 一定,肯定(100%的可能性)
might, could 有可能,也许(20%~80%的可能性)
can’t 不可能,不会(可能性几乎为零)