present perfect

[norae99]

Dear teachers,

Is there any difference between the following sentences?

1) I've watched everybody that came down the stairs.

2) I've watched everybody that have come down the stairs.

Thank you in advance.
Have a nice day!

[riverkid]

Dear teachers,

Is there any difference between the following sentences?

1) I've watched everybody that came down the stairs.

2) I've watched everybody that [have] has come down the stairs.

Thank you in advance.
Have a nice day!

By convention, Norae, we use a singular verb with 'everyone/everybody even thought it has a notionally plural meaning.

The present perfect is used for a number of reasons in English. One, it's more formal. Another, it's sometimes used to add importance to finished actions. This is sometimes called the Present Perfect of Current Relevance,

Oh my god, I've broken my leg.

or the Present Perfect of "Hot News",

The president of Upper Goplakia has been shot.

[norae99]

Thank you very much, riverkid

[yeng23]

i think that when its
present perfect:
has(singular)/have(plural) + past participle of da verb!

past perfect:
had + past pariciple of the verb

future perfect:
will/ shall + have + past participle!

i hope u learn something!
im a student but i learned that from my teacher