Present continuous and present simple (2) (I am doing and I do)

    A. We use continuous tenses only for actions and happenings (they are eating/it is raining etc.).

  Some verbs (for example, know and like) are not action verbs. You cannot say 'I am knowing' or ,they are liking'; you can only say 'I know', 'they like'.

  The following verbs are not normally used in continuous tenses:

  like , love , hate , want ,  need , prefer ,  know , realise , suppose , mean ,  understand , believe , remember , belong ,  contain , consist , depend , seem,

  * I'm hungry. I want something to eat. (not 'I'm wanting')

  * Do you understand what I mean?

  * Ann doesn't seem very happy at the moment.

  When think means 'believe', do not use the continuous:

  * What do you think (= believe) will happen? (not 'what are you thinking')

  but * You look serious. What are you thinking about? (= What is going on in your mind?)

  * I'm thinking of giving up my job. (= I am considering)

  When have means 'possess' etc., do not use the continuous.

  * We're enjoying our holiday. We have a nice room in the hotel. (not 'we're having')

  but * We're enjoying our holiday. We're having a great time.

    B. See  hear  smell  taste

  We normally use the present simple (not continuous) with these verbs:

  * Do you see that man over there? (not 'are you seeing')

  * This room smells. Let's open a window.

  We often use can + see/hear/smell/taste:

  * Listen! Can you hear something?

  But you can use the continuous with see (I'm seeing) when the meaning is 'having a meeting with' (especially in the future--see Unit 19A):

  * I'm seeing the manager tomorrow morning.

    C. He is selfish and He is being selfish

  The present continuous of be is I am being/he is being/you are being etc.

  I'm being = 'I'm behaving/I'm acting'.

Compare:

  * I can't understand why he's being so selfish. He isn't usually like that. (being selfish = behaving selfishly at the moment)

  but * He never thinks about other people. He is very selfish. (not 'he is being') (= he is selfish generally, not only at the moment)

  We use am/is/are being to say how somebody is behaving. It is not usually possible in other sentences:

  * It's hot today. (not 'it is being hot')

  * Sarah is very tired. (not 'is being tired')

    D. Look and feet

  You can use the present simple or continuous when you say how somebody looks or feels now:

  * You took well today. or You're looking well today.

  * How do you feel now? or How are you feeling now?

  but * I usually feel tired in the morning. (not 'I'm usually feeling')