the simple tenses of verbsThe simple present and the simple past are termed "simple" because they are expressed by direct inflection on the verb. English verbs are not inflected for future tense, but expressions with the modal will are often spoken of as "future tense." Some grammars use the term tense to refer what are technically tense and aspect combinations: present perfect, past perfect, present progressive, past progressive, present perfect progressive, and past perfect progressive. Very occasionally, voice (i.e. passive) is treated as a kind of tense.Finally, some authorities use emphatic tense to refer to some or all constructions using the modal do. Only the basic present and past forms qualify as simple.(Present, Past, and Future)