In addition to regular English verbs, there are many irregular English verbs, which do not form the past participle with the ending ed. The English irregular verbs are related to the strong verbs of the German language. The following are examples of irregular English verbs. For example:
|Bare Infinitive||Past Participle|
The past participles of irregular English verbs are formed in an unpredictable manner, and must be memorized. A table of common English irregular verbs is provided.
Except for the irregularity of the past participle, the formation of the Present Perfect tense is the same for an irregular verb as for a regular verb. In both cases, the Simple Present of the auxiliary to have is followed by the past participle of the verb.
For instance, the irregular verb to take has the past participle taken. Thus, the Present Perfect of the irregular verb to take is conjugated as follows:
|I have taken|
|you have taken|
|he has taken|
|she has taken|
|it has taken|
|we have taken|
|they have taken|
Referring to the table of irregular verbs if necessary, fill in the blanks with the Present Perfect tense of the irregular verbs shown in brackets. For example:
They _________ tall. (to grow)
They have grown tall.
He __________ it. (to choose)
He has chosen it.