past form , future form , present perfect , past perfect and present continuous None of these forms exist in Chinese. In fact, there are no verb tenses at all. I suggest you study properly and you'll learn these things.

sorry but "past form , future form , present perfect , past perfect and present continuous" are notions of English grammar, not Chinese grammar therefore you cannot learn Chinese language using English grammar forms

我(wǒ)跟(gēn)我(wǒ)的(de)朋(péng)友(yǒu)正(zhèng)在(zài)意(yì)大(dà)利(lì)旅(lǚ)游(yóu)。 Im traveling to Italy with my friends by airplane. 我(wǒ)跟(gēn)我(wǒ)的(de)朋(péng)友(yǒu)已(yǐ)经(jīng)去(qù)意(yì)大(dà)利(lì)旅(lǚ)游(yóu)了(le)。 I have travelled to Italy with my friends by airplane. 我(wǒ)跟(gēn)我(wǒ)的(de)朋(péng)友(yǒu)会(huì)去(qù)意(yì)大(dà)利(lì)旅(lǚ)游(yóu)。 I will travel to Italy with my friends by airplane.