A regular verb will simply add -ed on to the end to form the past tense and past participle.
For example, to form the past tense of the verb 'laugh', we add -ed to create 'laughed' which is also the past participle of the verb.
Irregular verbs, however, don't add -ed to form the past tense or past participle.
For example, the past tense of the verb 'see' becomes 'saw' whilst the past participle becomes 'seen'.
Regular verbs form their past tense by adding "-ed" to the base form (e.g. walk -> walked), while irregular verbs change their spelling to form the past tense (e.g. go -> went). It is important to memorize the irregular past tense forms as they do not follow a consistent pattern.
"Have" is an irregular verb in English.
"Wrote" is an irregular verb.
Shown is an irregular verb because shown is different to ending in -ed. Does shown end in -ed? No it doesn't end in -ed so which makes it an irregular verb.
No, "appeler" is a regular -er verb in French. It conjugates according to regular -er verb patterns.
"Fly" is an irregular verb. Its past tense is "flew" and its past participle is "flown."
"Have" is an irregular verb in English.
regular or irregular
"Wrote" is an irregular verb.
It's an irregular verb.
It's an irregular verb.
It's an irregular verb.
It's an irregular verb.
To swim is an irregular verb.
Ate is an irregular verb.
irregular
irregular
By is not a verb, so it is neither regular nor irregular.