Should and must

"should" means 應該
"must" means 一定要

不過要記住

-"must"的有命令的含意比"should" 強烈.

-通常用於名稱[subject]之後

-而且兩者後面(在句子中)的動詞不改為過去式等改變.
例如:You must do all your homework before you watch the television.
must之後的do不能變成did/done/doing/does
He must does all his homework before he watch the television.
以上的句子是錯的.
即使he 應用 does
but 在must 之後 必須用do
正確為He must do all his homework before he watch the television.

Roy should eat all his dinner.
以上句子是對的.

This hungry tiger must find some food today night. Otherwise, it will die.
以上句子是對的.

Should is 應該。
Must is 一定。
e.g.You should listen your teather.
e.g.You must do.

程度上不同
Must 比 Should 強烈

e.g. I must leave now. 我一定要走了.
e.g. I should leave now. 我應該走了.

教輕的可用
e.g. I have to leave now. 我要走了．

Should is 應該。should 標示解釋

釋義 同義字/反義字



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DJ: []

v.aux.
1. (shall的過去式,表示過去將來)將
We hoped that we should be able to do that.
我們希望我們能這樣做。
2. (表示語氣較強的假設)萬一,竟然
If the car should break down on the way, you would have to walk back.
萬一汽車中途拋錨,你就得走回來。
3. (表示可能性,推測,推論或期待)可能,該
She should be here any minute.
她該馬上就到。
Dinner should be ready by now.
此刻晚飯應該做好了。
4. (表示義務,責任)應該,應當
You should do as she says.
你應當照她說的去做。
He should work harder.
他應該更加努力。
You should help your mother with the housework.
你應該幫你母親做家務。
5. (表示委婉,謙遜)可,倒
6. (表示感情,意志等)竟然會;應該
I'm sorry it should be this way.
很遺憾,事情竟會是這個樣子。
It's strange that he should be absent.
真奇怪,他竟會缺席。
You shouldn't have told him about it.
你不該把這件事告訴他的。
7. (表示建議,命令,決定等)應該,必須
Crime should be punished.
犯罪應受懲罰。
8. (表示目的)會,可以
He stood away so that we should enter the room first.
他讓開一步,讓我們先進屋。
9. (表示結果,意願等)就,該
10. (表示徵求同意等)可以,該
Who should I see about my schedule?
關於我的日程該和誰商討?

Must is 一定。must- 標示解釋

釋義



comb.form
1. (結合動詞構成形容詞或名詞)表示"必須,一定,務必"(如:must-have必得之物,必定有的;a must-see movie一部非看不可的電影)

Should is 應該。
Must is 一定。