present perfect 加has/have+past participle 而present perfect progressive has/have+been+verb+ingparticiple 过去分词 相关知识点: 试题来源: 解析present perfect 和 present perfect continuous 的最大区别在: 前者表示某事情在过去已经完全完成,可不知道确定时间....
present perfect结构 Present perfect is a verb tense in English that is used to express an action that has been completed in the past but has a connection to the present. It is formed using the auxiliary verb "have" (in the present tense) followed by the past participle of the main verb...
We form the present perfect with the verb 'have' and the past participle of the main verb. So the main verb here is 'achieve' and 'have' is an auxiliary or help verb. 我们用动词 have 和主动词的过去分词构成现在完成时。所以这里的主动词是 achieve,而 have 是助动词或辅助动词。 It helps...
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Affirmative:have / has + verb 3(past participle) Negative:haven’t / hasn’t + verb 3(past participle) Using Present Perfect We use Present perfect to show that a finished action/event has a connection with the present or has a result in the present. ...
Present Perfect Usage: The present perfect tense is a commonly used verb form in English. It is used to describe actions or states that started in the past and have a connection to the present. Here are some key ways to use the present perfect tense: 1. Completed actions with indefinite ...
present perfect progressive 现在完成进行 和present perfect 有什么区别present perfect 加has/have+past participle 而present perfect progressive has/have+been+verb+ingparticiple 过去分词
I have a book. The verb “have” is in which tense? A. Present Simple B. Present Perfect C. Future Simple 相关知识点: 试题来源: 解析 A。“have”在这里是一般现在时,表示现在拥有的状态。现在完成时是“have had”等形式,将来时是“will have”,这里只是说现在有一本书,所以是一般现在时。
I have lost my keys, so I can't find them. Lost in the past, affects the present Tips Past simple uses a verb form like "studied," "visited," "bought." while present perfect uses "have/has" +past participle(studied, visited, bought). ...
The present perfect continuous (also known as the present perfect progressive) is a verb tense used to talk about something that started in the past and is continuing at the present time. The formula is [have/has] + [been] + [present participle (verb + -ing)]. Words that mark time, ...