I/you/we/they have spread. He/she/it has spread.
The present tense for spread is spread.
"Have studied" is in the present perfect tense. It is formed by using the auxiliary verb "have" followed by the past participle of the main verb.
There are two forms of the present perfect tense: simple present perfect (I have eaten) and progressive present perfect (I have been eating). Both forms use "have" or "has" with the past participle of the main verb to indicate an action that started in the past and has relevance to the present.
The present perfect tense of "hid" is "have/has hidden."
have/has planned (PRESENT PERFECT)
The present perfect tense of "are" is "have been."
Has/have drawn is the present perfect of "draw".
The present perfect of "follow" is "have followed" or "has followed."
The present perfect is 'I have sung'
Present perfect tense.
Present: show, Past: showed, Future: will show, Present Continuous: is showing, Present Perfect: has shown, Present Perfect Continuous: has been showing, Past Continuous: was showing, Past Perfect: had shown, Past Perfect Continuous: had been showing, Future Continuous: will be showing, Future Perfect: will have shown, Future Perfect Continuous: will have been showing.
The present perfect tense of leave is have/has left. The present perfect tense of eat is have/has eaten.