1

×  I’m not a fan of cook, but I have to do it.
√  I’m not a fan of cooking, but I have to do it.

If we use a verb after a preposition, we must always use the -ing form of the verb. ‘I don’t like rock climbing, because I’m afraid of falling.’ ‘I always watch TV after having dinner’.

 

2

×  Speak English is difficult. 
√  Speaking English is difficult. 

When a verb is the subject of the sentence, we should use the -ing form of the verb. ‘Smoking is not allowed here.’ ‘Drinking alcohol and driving is very dangerous.’ ‘Drinking too many soft drinks can make children behave aggressively’

 

3

×  I living in Barcelona.
×  I’m live in Barcelona.
√  I’m living in Barcelona.
√  I live in Barcelona.

The –ing form of a verb CANNOT be used after the subject of the sentence; it is NOT a verb tense. You can use the verb be + the -ing form of another verb to form the present continuous, or you can use the present simple of the verb (depending on the meaning).

Remember that the present simple of a verb is only one word.

 

4

×  We went to the bar to drank a beer. 
√  We went to the bar to drink a beer. 

×  I tried to spoke, but I coulnd’t. 
√  I tried to speak, but I coulnd’t. 

In a to infinitive verb, the verb after to is always the base form of the verb (the infinitive form).

A lot of verbs can be followed by a to infinitive in English (want, decide, try, offer, start, etc.). If you use another verb after one of these verbs, it must always have the to infinitive form.

  • I start to train in the morning. (present simple)
  • I started to train yesterday morning. (past simple)
  • I have started to train this morning. (present perfect)
  • etc.