Sliding.
No, "slide" is the present tense. The future tense would be "will slide".
It is present tense.
The present perfect tense of slide is "have/has slid." For example, "She has slid down the hill many times."
"slid" is already past tense. The present tense is "slide".
The verb is is the present tense.
The past tense of "slide" is "slid."
The past tense of "slide" is "slid."
The past tense of slide is slid
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
slid is the past tense
It was, (past tense) it is, (present tense) it will be( future tense)
Past tense I had Present tense I have Future Tense I will have