授课教案
学员姓名：____ 授课教师：杨老师所授科目：英语
学员年级：上课时间： ________ 年月日时分至时_______________________ 共小时
1）表允许，请求二can
need既可用作情态动词，也可用作实义动词。

用作情态动词时，用作实义动词时，可用于各种句式。

1) .用作情态动词，用于否定句和疑问句中。

a) .Need I ….? Yes , you must / No, you needn ' t . Need we finish the work today ?Yes you __?
A.need
B.can
C. may
D.must
b) . need + do sth .变否定句：n eed n' t do sth
变疑问句：Need sb do sth ?
2) .用作实义动词
a) . need + to do sth . We n eed _____ (buy) some school things . 变否定句：don' t /doesn' t /didn ' t +need to do sth .
变疑问句：Do / Does /Did sb + n eed to sth ?
Yes , … do/ does / diN o, sb don ' t / doesn ' t /didn ' t . You don ' t need to do it yourself.
b) .当主语是物时。

Sth + need + doing sth = Sth +need to be done . The table n eeds pain ti ng . =The table n eeds ________________ .
5.had better 的用法
1) . had better + 动词原形=It' s best to do sth .
You had better _____ (stay )at home . =
__________________ stay at home .
2) . Had better n ot + 动词原形
We had better________ (not play ) the computer games .
6.must 与have to
Y es, please. / Certai nly 疑问句中must改为
主要否定句或疑问句中
（内在原因）have to “必须，不得不”强调客观需要，即外界因素迫使某人不得不干某事。

（外界原
因）。