English Exercises 11th Grade

 

English Exercises to Practice

 11th Grade

Forma – “can”

Se usa “can” + infinitivo del verbo principal (sin la partícula “to”).

Positive	I You We They She / He / It	can	run	very fast.
Negative		can't cannot

 

interrogative	Can	I you we they he / she / it	run	very fast?
Answer	Yes,		can.
	No,		can't. cannot.

Form - "could"

Se usa "could" + infinitivo del verbo principal (sin "to").

Positive	I You We They She / He / It	could	buy	the tickets.
Negative		couldn't could not

 

interrogative	Could	I you we they he / she / it	buy	the tickets?
Answer	Yes,		could.
	No,		couldn't.

be able to
    - we use be able to for particular instances, and it often suggests “managing to overcome difficulties”
She was able to swim across the river although it was very wide.
We were able to pay although we were poor.
    - we also use be able to for things which a person will be capable of doing in the future but not now
If she practises, she will be able to play Chopin.

could
    - could does not always have a past meaning
You can visit the museum. (= now or in the future)
You could visit the museum. (= now or in the future, but more tentative, or polite)
It can be very cold at night. (= generally speaking)
It could be very cold at night. (= generally speaking)