آموزش گرامر و کاربرد افعال کمکی در انگلیسی

can:

will:

He will go to the beach later today.

negative contraction: won’t go

shall:

may:

possibility and permission

1. (future possibility) They may walk their dogs this afternoon.

2. (Asking permission)

A: May I walk your dog?

B: Yes, you may.

negative: may not walk (don’t contract this one!)

1. past tense of can–usually negative.
2. possibility and ability

When I went out to eat last night, I couldn’t read the signs because they were in Chinese.

negative contraction: couldn’t read

would:

She wouldn’t touch the spider she saw earlier this morning because she’s afraid of them.

negative contraction: wouldn’t touch

recommendation and good idea.

(Related to “shall” but much better and easier to use.)

He should be careful on those roller skates because he could fall.

negative contraction: shouldn’t be

possibility

(use instead of “may” in some cases)

These eggs might break when they hit the ground. In fact, they’ll probably break unless they land on something soft.

negative: might not break (don’t contract!)

must:

They must attend this important meeting.

negative: must not attend (استفاده از مخفف در اینجا اشکالی ندارد، اما رسمی به نظر می‌رسد و بریتانیایی به نظر می‌رسد. اکثر آمریکایی‌ها سعی می‌کنند لهجه‌شان بریتانیایی به نظر نرسد، اما اگر بخواهید می‌توانید از مخفف استفاده کنید.)

I must go.

He must be tired.

They should eat.