这是has 和 had 最关键的区别所在。 has 用于构成现在完成时,表示动作发生在过去,但对现在仍有影响或结果;而 had 用于构成过去完成时,表示动作发生在过去的某个时间点之前,即过去的过去。 现在完成时 (has/have + 过去分词): 强调过去发生的动作对现在造成的影响,常与 since, for, already, yet, just 等时...
'had, has, have'是英语中最常用的助动词和实义动词,其区别主要在于时态、主语人称以及语境功能。本文将用通俗易懂的实例,解析三者在不同场景下的使用规则。一、时态与主语的黄金法则这三个词的核心差异在于时态和主语人称:一般现在时: has仅用于第三人称单数(如he, she, it...
have / has been + v-ing 概念：计时起点过去，终点现在 又具备进行体的特征：①进行中 ②未完成 ...
本文将详细介绍have和had的用法,在使用过程中需要注意的细节以及相关的例句来帮助读者更好地理解。 二、have的基本用法 1.表示拥有或持有 Have可作为一个实义动词表示“拥有”或“持有”某物。例如: - I have a dog.(我有一只狗。) - She has a beautiful house.(她有一座漂亮的房子。) 2.表示经历或体验...
Had he succeeded, he would have acquired a monopoly... 要是他当时成功了,他就会取得垄断地位。 柯林斯高阶英语词典 Had I known what the problem was, we could have addressed it. 如果我当时知道问题出在哪里,我们就可以设法解决了。 柯林斯高阶英语词典 If your customer thinks he's been had, you...
“Has had”:现在完成时,强调过去的动作对现在的影响。 例:He has had three meetings today.(他今天已开了三场会,暗示可能还有更多。) 四、特殊注意事项 主语一致性:仅当主语是第三人称单数时使用“has had”,复数或第一/二人称主语需用“have had”(如:They have had... / I hav...
6.to cause to, as by command or invitation:Have him come here at five. 7.to be in a certain relation to:She has three cousins. 8.to show or exhibit in action or words:She had the crust to refuse my invitation. 9.to be identified or distinguished by; possess the characteristic of:...
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i have hadvsI may also hadi have hadvsI has hadhave hadvshas hadhelplessvshave hadhadnt hadvshad hadhave not hadvshave not have What Our Customers Are Saying Our customers love us! We have an average rating of4.79stars based on283,125 votes. ...
The colour green has a restful effect Had See Have. And lever me is be pore and trewe.[And more agreeable to me it is to be poor and true.] Him had been lever to be syke.[To him it had been preferable to be sick.] For him was lever have at his bed's headTwenty bookes, cl...