ページ1:

Date
ex: Need I
Say
more
You needn't
worry.
needn't=
need not
must
1.表示「必須」(義務)
用法:must+原v
· 表示強烈的必要性,語氣比 have to更強,通常用於規則
1命令或個人認定
ex:
• You must finish
your
homework before dimer.
Passengers must wear seat belts,
否定句 = must not (mustnt)表示絕對不能,
用法: must t原v.(對現在或未來的推測)
·表示「一定、肯定,(根據事實推論)
ex: He must be fired afler working all day.
This must be the right place.
否定形式要用 can't (不能用mustnt)
ex: He can't be at home now.
3.表示「強烈建議」
ex. You must try this cake.(強烈推薦)
比較 need/have to /must
must:強烈義務,幾乎沒有選擇(主觀或規定)
have to:客觀義務、外在規定。
ex. You mustn't touch that wire
2表示「一定,必然」(推測)
電線
INAN PAO
need
:表示「必要性」或「缺乏的東西,
虹

ページ2:

have to
1.基本意思
Date
.表示必須,不得不,通常指外在規定或客觀需要,而不是
個人意願語氣最弱
句型
·肯定句
St have/has to + V原形
·未來式: will have to
ex. You will have to work hardor.
need
1.作為一般動詞(表示「需要」)
• 結構
ex:I have to finish
homework.
my
.否定句
St don't doesn't have to tv原形
ex:You don't have to
· 疑問句
95 how
Do/Does + 5 + have to+V原形...?.
ex:Do we have to wear a
3. 時態變化
過去式:
had to
uniform?
ex: I had to get up early yesterday.
St need(s)
+ N
/v-ing/tov
need
some
help
ex: I
(N)
The needs to finish her home worlk
(V-ing)
否定句
don't /doesn't need to V
ex: You don't need to
go
12. 作為情態助動詞(少見,用於疑問/否定,表示「必需」
·用法類似must,通常出現在否定句或疑問句,不用o
後面接原V.