present simple to past simple是什么意思(急!)
Simple present tense转换Simple past tense
present simple,present continuous ,past simple ,past continu
present simple & future simple各是什么意思?
造句用 past simple and present perfect
present perfect,simple past,请帮忙答题.
用present perfect tense ,simple past tense ,
present simple
simple present
past simple
Present simple和Present continuous分别是什么意思?
英语翻译past simple;personal pronoun;present continuous;present
求好心人教学一下英语语法,比如present simple,continuous,past simple,present