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Can, could, and be able to are used to express ability.

Can expresses ability in the present

I can speak English but I can´t speak French

Could expresses ability in the past

In English we use I don´t think + verb (affirmative). Let´s have a look at these sentences.

Incorrect: I think it´s not going to rain.
Correct: I don´t think it is going to rain.

Let´s have a look at the following sentences, what is the difference in meaning between them?

1. I have painted the roof (I painted it myself)
2. I have had the roof painted (I asked someone to do it)

Correct the errors and then check them against the corrected sentences below.

1. She usually is very outgoing.
2. Do ever you copy your homework?
3. She doesn´t enough study.
4. They went to the cinema last night?
5. I haven´t still seen John.

¿Te atreves a completar las siguientes frases con for o since?

1. We haven´t seen each other _________________ a long time.
2. I have lived in Bilbao ________________ I was a little girl.
3. Mark has lived in this town ___________________ 2006.

Have a look at these key phrases to make suggestions:

– Let´s + verb (infinitive without to)
– How about + verb (with -ing)
– Why don´t + sentence (subject + verb)
– Shall we + verb (infinitive)

Put the following words in order to form a grammatically correct sentence.

1. is / city / cool / such / a / New York /
2. so / was / that / barely / could / he / walk/ tired /John /
3. while / had / We / were / such / weather / wonderful /we /on / holiday /
4. everybody / enough / There / sit / for /weren´t / chairs / to /

Put the following words in order to form a grammatically correct sentence.

1. here/ wait / John/ Wait / back / comes /until
2. at/ good/ is / Marcus / really / tennis
3. Brazil / The / is / to / going / event / in / place / take
4. suggested / Marian / to / zoo / Brazil / going / the

Here are 5 sentences with common errors made by non-native English speakers.
Correct the errors and then check them against the corrected sentences below.

I think you shouldn´t go out tonight.
My mom doesn´t let me to go to the party.
We have to wearing a uniform at work.
You must to wear a helmet when you ride a bike

Put the following words in order to form a grammatically correct sentence.

1. aren´t / any / our / town / in / buildings / old / There
2. it / stopped / Has / yet / raining / ?
3. How /you / do / often / take / taxi / a / ?
4. sweater / was / me / small / wear / The / for / to