The infinitive is the base form of a verb. It may be preceded by 'to' (the to-infinitive) or stand alone (the b...
THE ZERO INFINITIVE
The zero infinitive is used:
after most auxiliaries (e.g. must, can, should, may, might)
after verbs of perception,...
To form the negative infinitive, place not before the to- or zero infinitive:
e.g. not to worry:
It's hard not to wo...
INFINITIVE AFTER QUESTION WORDS
These verbs: ask, decide, explain, forget, know, show, tell, understand, can be followed by a que...
How and when to use the infinitive
The most common uses of the infinitive are:
To indicate the purpose or intention of an action (...
Other infinitive forms
The infinitive can have the following forms:
The perfect infinitive
The continuous infinitive
Verbs usually followed by the infinitive
VERBS NORMALLY FOLLOWED BY THE INFINITIVE
A. The to-infinitive is used after the verbs in this group,...