Grammar: Gerund and Infinitive

The Full infinitive (With to) is used:
 -to express purpose:
 I'm just going to the bank to get some money out .
 -after certain adjectives (I'm/she was etc) amazed, delighted, disappointed;
 (It is/was) easy, important, neccesary, We're delighted to see you. It is easy to critisize others.
-after certain verbs. agree,appear,arrange,demand,deserve,expect,help,hesitate,hope,learn,manage,need,offer,pretend,refuse,seem,struggle,threaten,would like,promise, 
I've decided to take the exam but don't expect to pass. 
-after certain verbs with an object. advise,allow,ask,enable,encourage,expect,help,invitate,persuade,recommend,remind,tech,tell,warm The experience taught me not to trust anyone but myself
 -after certain nouns ability,chance,decision,effort,failure,intention,opportunity,plan,power,refusal,right,tendency,way
 the defendant excerscised his right to remain silent 

 The Bare infinitive (without to) is used: 
-after modal verbs 
you can look at it, but you mustn't touch 
 -after these verbs
 help,had better,let,make,would rather/sooner
 I'd better go- I promised to help my dad clean his car 



 The Gerund is used:
 -after prepositions 
She got tired of waiting for him and went home
 -as the subject,object or complement of a sentence or clause 
Eating the right kind of food improves Learning 
-after certain verbs admit,adore,advice,appreiate,anticipate,avoid,consider,deny,dislike,enjoy,feel,like,imagine,keep,mind,miss,prevent,recommend,resent,risk and suggest.
 eg. He admitted breaking the window but denied stealing anthing 
-after verbs which include the preposition 'to'
get round to,be/get used to,look forward to,object to
 I still can't get use to working with a computer
 -after these verbs and expressions
 can't help,can't stand,have difficulty,It's/there is no use, It's not worth It's no use worrying about it