Activity 1: Click on the words in the correct order.
Activity 2: Choose the correct answer.
Activity 3. Active or passive?

Activity 1: Click on the words in the correct order.
Activity 2: Choose the correct answer.
Activity 3: Gerund or 'to' infinitive?
Activity 4: Gerund of 'to' infinitive?
Activity 5: Try, remember, forget, stop and regret.

Click here for a list of verbs which are followed by gerund or 'to' infinitive.

We use the following modal verbs to say how sure we are about something.

• Use 'must' when you are sure something is true:

• Use 'may' or 'might' when you think something is possibly true:

• Use 'can't' when you're sure something is not possible or not true:

• Use 'must' and 'have to' to express obligation in English. They are very similar but:

• Use 'don´t have to' to say there's no obligation or something is not necessary:

• Use 'mustn't', 'can't' or 'not be allowed to', to express prohibition in English:

• Use 'should', 'shouldn't' or 'ought to' 'ought not to' to give your opinion or some advice:

• When we use the past simple, a specific time in the past is mentioned: 'Did you see the match last night?' or understood between the speakers: 'Did you see the match?' (We both know it was last night...). So, a question beginning with 'When...?' will normally be in the past simple.   
• We use present perfect for a past action where no specific time is mentioned or understood: 'I've been to Paris twice', or when there is a connection with the present: 'I've worked here for two years' (I'm still working here). 

• We use going to for things we have already decided to do, it's our plan or intention:

• We use present continuous for future arrangements when a time / place has been agreed (most of the times 'going to' is also possible). However, with the verbs 'go', 'leave', 'come', 'meet', 'have', we tend to use the present continuous.

• We use 'will', 'won´t' for instant decisions at the moment of speaking, offers, promises and predictions:

• Past simple: We use this tense for completed past actions. 

• Past continuous: This is the past equivalent of the present continuous: It is used for actions in progress in the past which are often 'interrupted by a short completed action' (in past simple).

• Past perfect: We use this tense when we are talking in the past and we want to refer to an action which happened earlier in the past.

• Use the present simple for things that are always true or happen regularly:

• Use the present continuous for actions in progress at the time of speaking (a) or for future arrangements (b):