Intervened... Intervened... Doubts like this, especially when the subject refers to the vast universe of verbs, are recurrent manifestations. Recurring because verbs consist of some particularities, as the subtitle itself points out with regard to derivation. Understandable even. However, what becomes unacceptable, especially when it comes to the written modality of language, is to allow that such questions persist - which can eventually lead to misunderstandings, "deviations", "slips" linguistics.
So, taking care that this does not happen, we must first be aware that “to intervene” is = the prefix inter- + the verb to come. In this sense, let us pay attention to some assumptions about the similarities established through, obviously, some forms combined in the present tense:
I come = I intervene
he comes = he intervenes
we come = we intervene
They come - they intervene
past tense perfect
I came = I intervened
he came = he intervened
We came = we intervened
They came = they intervened
subjunctive mode
Gift
That I come - that I intervene
Let him come - let him intervene
Let us come - let us intervene
Let them come - let them intervene
Imperfect past tense
If I came - if I intervened
If he came - if he intervened
If we came - if we intervened
If they came - if they intervened
Future
When I come - when I will intervene
When he comes - when he intervenes
When we come - when we intervene
When they come - when they intervene
Added to these aspects, it is worth mentioning about the participle, which is confused with another nominal form – the gerund. Thus, how to establish the differences between one modality and another? Another fact that only the context in which the communicative situation takes place will say, how well we can point out through the examples mentioned below:
She had come to watch the show – verb form expressed in the participle.
She was coming when the car broke down - verb form expressed in the gerund.
By Vânia Duarte
Graduated in Letters
Source: Brazil School - https://brasilescola.uol.com.br/gramatica/verbo-intervir-uma-derivacao-verbo-vir.htm