There are two groups of verbs, termed regular or irregular, and are identified by how their simple past tense and past participle are formed.

• Regular verbs – in this group of verbs, the simple past tense and past participle end in –d or –ed.

• Irregular verbs – a verb that does not follow the usual pattern of grammar. If a verb is irregular, the simple past tense and past participle do not end in –d or –ed. They vary as follow:

• Where all three forms of an irregular verb are the same.

EXAMPLE:	simple present tense – cost; hurt; put; read; shut.
	simple past tense – cost; hurt; put; read; shut.
	past participle – cost; hurt; put; read; shut

• Where only the simple past tense and past participle are the same.

EXAMPLE:	simple present tense – carry; die; fit; jump; try.
	simple past tense – carried; died; fitted; jumped; tried.
	past participle – carried; died; fitted; jumped; tried.

• Where all three forms are different.

EXAMPLE:	simple present tense – begin; choose; do; go; see
	simple past tense – began; chose; did; went; saw
	past participle – begun; chosen; done; gone; seen

There are verbs which can be regular or irregular as follow:

• simple present tense – burn; dream; spell.
• simple past tense – burned/burnt; dreamed/dreamt; spelled/spelt.
• past participle – burned/burnt; dreamed/dreamt; spelled/spelt.

LIST 19 shows a list of irregular verbs.