1)现在完成时的构成 现在完成时由 “助动词have(has)+过去分词”构成。下面以动词finish为例,将现 在完成时的肯定式、 否定式和疑问式以及简略答语列表如下: 肯定式 否定式 I/You have finished. I/You have not finished. He/She/It has finished. He/She/It has not finished. We/You/They have fini...
Present perfect tense现在完解析:①现在完成时的定义:现在完成时表示从过去持续到现在的动作或状态,或已完成但对现在有一定影响的动作,另外还用现在完成时表示迄今为止动作发生的次数。 其谓语结构为“have/has+动词的过去分词”。②现在完成时的各种句式: a. 肯定句:主语+ have/has +动词的过去分词+其他.如:Jim...
Perhaps your language has a tense with 'have' and the past participle too! If so, you might be thinking, oh this looks the same. 也许你的语言中也有带 have 和过去分词的时态呢!如果有的话,你可能会想,哦,这看起来一样。 Don't be fooled! The we way we use the present perfect in Englis...
英语知识点：现在完成时（PresentPerfectTense）一、基本概念现在完成时是英语中一种常用的时态，用来表示动作或状态从过去某一时间开始一直持续到现在，或者对现在产生影响。其结构为：主语+have/has+过去分词（PastParticiple）。二、结构与构成1.肯定句-主语+have/has+过去分词-例句：Ihavefinishedmyhomework.（我已经...
现在完成时(The present perfect tense)的用法小结 一、构成:助动词have / has+p.p(动词的过去分词) 二、用法:现在完成时既涉及过去,又联系现在。用法一:表示过去发生或已经完成的某一动作对现在造成的影响或结果。常与just(刚刚),already(已经),never(从来没有),ever(曾经),before(以前),yet(仍然),once(一...
百度试题 结果1 题目Present perfect tense: have/has + past participle e.g. I have finished my homework.相关知识点: 试题来源: 解析 在强调重点和难点时,适当提高音量,加强语气。反馈 收藏
现在完成时(Present Perfect Tense)现在完成时用来表示过去发生的动作对现在造成的影响或结果。例子:I have finished my homewor
英语基础语法，【现在完成时 (The Present Perfect Tense) 】(1)现在完成时的构成 现在完成时由“助动词 have(has)+过去分词”构成。现以动词 work 为例，将现在完成时的肯定式、否定式和疑问式 以及简略答语列表如下：肯定式 I/You have worked 。He/She/It has worked 。We/You/They have worked 。否定...
一、构成 1.肯定句:have/has+过去分词(done) 主语(I/We/You/They/复数名词)+have+过去分词(done)+其他 主语(He/She/It/单...
The present perfect tense is an English verb tense used for past actions that are related to or continue into the present, such as ongoing actions or changes over time. You can recognize the present perfect tense by the auxiliary verbs (or helper verbs) have and has. Example: I have gone...