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...
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
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...
Present Perfect – Negatives We make negative sentences with the auxiliary verb (have/has) and “not“: I have not caught a cold. They have not left. She has not been to New York. We can contract these negatives in two ways: I haven’t / I’ve not caught a cold. They haven’t ...
Contractions are a combination of certainpronouns, verbs and the wordnot. They are mostly used in spoken and informal written English. The table below provides an overview of contractions in thepresentperfecttenseusing theverbhave. long formcontractionexample ...
: a verb tense that is used to refer to an action that began in the past and is completed at the time of speaking Note: The present perfect in English is formed with "has" and "have" and the past participle of a verb, as in "He has left," and "They have found what they wer...
【题目】6 We form the present perfect tense with have/has and the past participle of the verb.You are writing about a friend's travels in your diary. Complete your diary entry using the correct forms of the verbs in brackets.My friend Jack is enthusiastic about travelling. He has sent ...
I Complete these sentences using the present perfect tense of the verb in brackets.(用括号里所给动词的现在完成时形式完成下列句子。)1 I ___(know) Jim for many years.2 They ___ (live) in that house for two years.3 My brother ___(write) three books.4 Connie ___ (not break) her...
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 ...