(1) It rains.
(2) It is cold.
(3) It is growing dark.
(4) It seems that there is no end to this.
(5) It is unclear why he cut the rope.
(6) It snows a lot.
(7) It is snowing a lot.
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"Rains" and "snows" are impersonal verbs. It is an impersonal pronoun. Is 'is' an impersonal verbs? How can I find kinds of impersonal verbs? Long ago, those impersonal vers didn't need subjects, right?
The only time you don't need a stated subject in English is when using the imperative (command) form. All other types of sentences need both subjects AND verbs. I've never heard of an impersonal verb, but certainly there are impersonal pronouns.
Commands:
Shut the door.
Pass the salad, please.
Sit down.
(In those and all other commands, the subject is understood to be "you," the person/people to whom the speaker is speaking.)
Yes, you are correct that verbs like "rains" and "snows" are impersonal verbs, and "it" is used as an impersonal pronoun in these sentences. The verb "is" itself is not considered an impersonal verb, as it can be used with both personal and impersonal subjects.
To find different kinds of impersonal verbs, you can refer to a grammar resource or a verb conjugation guide. Generally, impersonal verbs are those that express a weather condition, physical sensation, or a state of being without referring to a specific subject.
In the case of the sentences you provided, "rains," "snows," "is cold," and "is growing dark" are examples of impersonal verbs because they describe weather conditions or sensory experiences without specifying a subject.
In the past, some impersonal verbs did not require a subject, and they were referred to as "impersonal intransitive verbs." However, in modern English, most impersonal verbs still require the use of a subject, with the pronoun "it" often serving as a placeholder subject.