Basic Tenses: Irregular Verb

Basic Tenses: Irregular Verb

Irregular verbs list
This page shows the basic tenses with the irregular verb sing. It includes the affirmative or positive form (+), the negative form (-) and the interrogative or question form (?).
The basic structure is:

positive:	+	subject + auxiliary verb + main verb
negative:	-	subject + auxiliary verb + not + main verb
question:	?	auxiliary verb + subject + main verb

These are the forms of the main verb that we use to construct the tenses:

base verb	past	past participle	present participle -ing
sing	sang	sung	singing

		past	present	future
SIMPLE do + base verb (except future: will + base verb)	+	I did sing I sang	I do sing I sing	I will sing
	-	I did not sing	I do not sing	I will not sing
	?	Did I sing?	Do I sing?	Will I sing?
SIMPLE PERFECT have + past participle	+	I had sung	I have sung	I will have sung
	-	I had not sung	I have not sung	I will not have sung
	?	Had I sung?	Have I sung?	Will I have sung?
CONTINUOUS be + -ing	+	I was singing	I am singing	I will be singing
	-	I was not singing	I am not singing	I will not be singing
	?	Was I singing?	Am I singing?	Will I be singing?
CONTINUOUS PERFECT have been + -ing	+	I had been singing	I have been singing	I will have been singing
	-	I had not been singing	I have not been singing	I will not have been singing
	?	Had I been singing?	Have I been singing?	Will I have been singing?

» Basic Tenses: Regular Verb