|The verbs will, would, shall, should, can, could, may, might, and must cannot be the main (full) verbs alone. They are used as auxiliary verbs only and always need a main verb to follow. |
WillUsed to express desire, preference, choice, or consent:
Used to express the future:
- I will take this duty.
- Will you stop talking like that?
Used to express capacity or capability:
- It will rain tomorrow.
- The news will spread soon.
Used to express determination, insistence, or persistence:
- This bucket will hold two gallons of water.
- This airplane will take 200 passengers.
Would (past form of will)Often used in auxiliary functions with rather to express preference:
Used to express a wish or desire:
- I would rather go shopping today.
- We’d rather say something than stay quiet.
Used to express contingency or possibility:
- I would like to have one more pencil.
Used to express routine or habitual things:
- If I were you, I would be so happy.
- Normally, we would work until 6 p.m.
ShallMainly used in American English to ask questions politely (it has more usages in British English). For the future tense, will is more frequently used in American English than shall.
Often used in formal settings to deliver obligation or requirement:
- Shall we dance?
- Shall I go now?
- Let’s drink, shall we?
- You shall abide by the law.
- There shall be no trespassing on this property.
- Students shall not enter this room.
Should (past form of shall)Often used in auxiliary functions to express an opinion, suggestion, preference, or idea:
Used to express that you wish something had happened but it didn’t or couldn’t (should + have + past participle):
- You should rest at home today.
- I should take a bus this time.
- He should be more thoughtful in the decision-making process.
Used to ask for someone’s opinion:
- You should have seen it. It was really beautiful.
- I should have completed it earlier to meet the deadline.
- We should have visited the place on the way.
Used to say something expected or correct:
- What should we do now?
- Should we continue our meeting?
- Should we go this way?
- Where should we go this summer?
- There should be an old city hall building here.
- Everybody should arrive by 6 p.m.
- We should be there this evening.
Fill in the blanks using an appropriate auxiliary verb.
1)I leave now. It is too late.
2)You have seen him. His dance was amazing.
3) we have lunch together?
4)I like a cup of tea, please.
5) we read the email?
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