What are strong verbs and weak verbs?
A verb which forms its past tense by a change in the main vowel of the present tense and without the addition of any ending is called a strong verb.
1) Those that form the past participle by the addition of n, en or ne.
2) Those that form the past participle without any such addition.
Instances of the same are:
- Give, gave, given
- Sit, sat, sat
A verb which forms its past tense by adding –ed, -d or –t to the present tense, either with or without a change in the vowel sound, is called a weak verb.
- Verbs which form the past tense by adding -d, -ed or -t to the present, with no change in the vowel sound. Most verbs in the language belong to this category.
Say, said, said
Keep, kept, kept
- Verbs which end in -d or -t and simply shorten their vowel sound in the past tense:
Feed, fed, fed
Breed, bred, bred
- Verbs which have all the three forms alike:
Bet, bet, bet
Hit, hit, hit