Present simple,present continuous,present perfect simple,present perfect continuous

present simple simple present Present simple,present continuous,present perfect simple,present perfect continuous simple present tense The simple present tense simple present是什么意思? present perfect simple and present perfect continuous 什么是simple present tense or present progressive? past simple present continuous present simple the vervto be' 英语翻译past simple；personal pronoun；present continuous；present simple present simple to past simple是什么意思（急!） present simple ＆ future simple各是什么意思?也许是什么时态吧! 高中英语中的present simple tense是什么意思? 用present perfect tense ,simple past tense , 用Present Simple造句 要5个 The simple present and the present continuous的中文意思? Present simple和Present continuous分别是什么意思?如题 the simple present tense中的present怎么发音