offer - decide - hope - deserve - promise - agree - plan - manage - afford - threaten - refuse - arrange - fail - forget - learn - prepare - attempt - try - aim After these verbs you use TO... (infinitive): He learnt TO look after himself. She refused TO leave. She decided to look for a new job. The negative is NOT TO: We decided NOT TO go out because of the weather. I promised NOT TO be late. We also use TO...after: seem - appear - tend - pretend - claim He pretended TO be angry. Prices always tend TO go up. He seems TO have plenty of money. After some verbs TO...is not possible. For example, enjoy / think / suggest: He suggested going to the cinema. (not suggested TO go) He suggested that we go to the cinema. I'm thinking of buying a new car. (not TO buy) I enjoy reading books. (not TO read) Some verbs can also be followed by a that-clause: I promise to wait = I promise that I will wait. He pretended to be angry = He pretended that he was angry. The bare infinitive (infinitive without TO) after verbs and expressions: - can, could, do, must, should, shall, will: They could do it today. He may be ill. - "need" and "dare", except when they are conjugated with do / did or will / would: You needn't say anything. (but You don't need TO say anything) - feel, hear, see and watch: I heard him lock the door. - "let": They let him use the internet. - "make": He made me move my car. - "had better": You'd better hurry up. - "have": She has the house-maid do the housework.

Here are some specific phrases after which you would not use TO with the infinitive: Why not Why should we Why sould we not Had better Would rather Would sooner

You should normally use "to" before the infinitive, but here a SOME circumstances where it is not used: 1. After auxiliaries or modals (would, should, will, must, can, could, might, etc). 2. After "to do". 3. After "let" + object (I let me dog go outside). 4. After Verbs of Perception + Object (I saw the dog RUN down the street.) 5. After "make" + Object (I made my dog GO outside. 6. After the verb "to do". (I don't LIKE ice cream).