The arrival of suffering is to make people sober rather than sad, to make people wise, not regret.
-type verb: It has a word meaning, but is not complete. Add noun/adjective to serve as a descriptive word.
Common verbs:
be verb am, is, are, are, were, were, were
3 Keep, remain, stay
4 Change becomes, get, grow, turn, (go)
5 Sensory feel, sound, smell, taste, look
modal verb
I could after the modal verb + verb prototype
1, can/can Can,
(1) Expression ability, means,
I can speak English.
I could play the piano,When I was ten years old.
(2) means request Allow, meaning yes, can.
Can you help me?
Yes,I can./No,I can't.
Could you help me?
Yes,I can./No,I can't.
Summary: 1. When expressing ability, can is mostly used for the general "ability" of the present or future, and could is mostly used for the past "ability".
2. When indicating request and allow, could often be used in question sentences, and the tone is more tactful than can.
2.may and might indicate request
May I use your pen?
Yes, you may./sure./of course.
No, you can't./mustn't.
means that when requesting, the might tone is more tactful and polite, and more formal than can, could.
3.must Must
Must I finsh the work today?
Yes, you must.
No, you needn't./No, you don't have to.
must Subjective will have to objective will
4.need If you need it, you can be a real meaning verb or a modal verb
. When you are a real meaning verb, it is only used in affirmative sentences. When
is a modal verb, it is followed by the verb's original form. It is often used in negative sentences and question sentences
Need I finish the work at once?
Yes, you must ./No, you needn't.
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