作业帮啥时间呵呵
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/14 17:11:04
解题思路： 注意平时多积累，根据题意要求来做，相信自己加油哦同学
解题过程：
三个冠词 a an the
一般过去时的标志词：ago, yesterday, the day before yesterday, last week/year/night/month..., in 1989, just now, at the age of five, one day, ago, long ago, once upon a time, then, on that day
现在完成时的标志词：recently, recent years, these days/years, lately, since, for + 时段, in the past few years, ever since, in the last five months, up to now, since then, so far, ever, never, yet, lately, once, twice, three/four times..., already, before, just.
结构： 一般过去式谓语是动词过去式形式
现在完成时 谓语动词时 have/has + 动词过去分词形式。强调过去发生的事情或动作对现在造成的影响
解题过程：
三个冠词 a an the
一般过去时的标志词：ago, yesterday, the day before yesterday, last week/year/night/month..., in 1989, just now, at the age of five, one day, ago, long ago, once upon a time, then, on that day
现在完成时的标志词：recently, recent years, these days/years, lately, since, for + 时段, in the past few years, ever since, in the last five months, up to now, since then, so far, ever, never, yet, lately, once, twice, three/four times..., already, before, just.
结构： 一般过去式谓语是动词过去式形式
现在完成时 谓语动词时 have/has + 动词过去分词形式。强调过去发生的事情或动作对现在造成的影响