For example, in the sentence, "he failed", failed is an example of an intransitive verb. Now, let's consider this. Instead of "he failed", let's rephrase the sentence as, "he failed the exam". Here, we have a clear subject[he], and an object[exam]. Therefore, would "failed" be considered an example of a transitive verb, now. Also, are there some examples of an intransitive verb that are strictly used as an intransitive verb, if IT IS POSSIBLE that intransitive verbs can be converted into transitive verbs. Also, also, how to expand my knowledge on "verbs". I'm currently reading "Wren and Martin". Thx
There is no regular process in English for converting intransitive verbs to transitive, but it can often be done.
Two examples of verbs which, as far as I can think, can never take a direct object are exist and dine. But sleep (which you might think was archetypically intransitive) has a transitive meaning "accomodate for sleeping", as in This cabin sleeps eight people.
Then there's the vexed question of whether sentences like "He died a good death"; "They slept the sleep of the blessed" and "It's raining cats and dogs" should be analysed as transitive or not. Syntactically they are indistinguishable from transitive sentences, but the NP after the verb is not usually regarded as an object.
Some verbs can be used as transitive and intransitive as well. Example,
He runs a business. (Tr.) The business runs well. (Intr.)
The driver stopped the bus. (Tr.) The bus stopped. (Intr.)
It is not that one can change a verb from trans. to intrans., or vice versa, but there are a few that can be used as both transitive and intransitive as well.