Present Tense
* I speak (singular)
* You speak (singular/plural)
* He/She/It speaks (singular)
* We speak (plural)
* They speak (plural)
Past Tense
* I spoke (singular)
* You spoke (singular/plural)
* He/She/It spoke (singular)
* We spoke (plural)
* They spoke (plural)
Present Participle (or -ing form)
* Speaking
Past Participle
* Spoken
Examples:
* Present Tense: "I speak English fluently."
* Past Tense: "We spoke about the weather yesterday."
* Present Participle: "He is speaking on the phone."
* Past Participle: "The language has been spoken for centuries."
Note: English is a relatively simple language when it comes to verb conjugation. The only real change happens in the third-person singular present tense (he/she/it) where an "s" is added to the verb (e.g., "speaks").