What tense is used in each sentence?读句子。在被动语态下画线。每个句子用了什么时态?1 The concept was first talked about as long ago as in the 1920s.这个概念早在20世纪20年代就被首次提出。2 In the 1950s, an attempt was made by two scientists to prove the theory mathematically.20世纪50...
What tense is used in each sentence?1 The concept was first talked about as long ago as in the 1920s.2 In the 1950s, an attempt was made by two scientists to prove the theory mathematically.3 Once the parcel had been received by this person, he/she would send the parcel onto a ...
"Has been" is in the present perfect tense. Specifically, it is in the third person singular of the present perfect tense. Here are some...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough homework...
They have coconut cream pie on the menu. This is known as the simple present tense. If you want to say that someone owned somethingin the past(but not necessarily now), usehad.Hadis the past tense version of have/has: He had lots of jewellery. ...
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, ...
Deserts are expanding. What tense is “are expanding”? A. Present continuous tense B. Present perfect tense C. Simple past tense D. Future tense 相关知识点: 试题来源: 解析 A。“are expanding”是现在进行时态,表示动作正在进行。在这个句子中,沙漠正在扩大。反馈 收藏 ...
? A. Present simple tense B. Present continuous tense C. Present perfect continuous tense D. Past perfect continuous tense 相关知识点: 试题来源: 解析 C。中文解析:这句话中“have been training”是现在完成进行时的结构,表示从过去某一时间开始一直持续到现在并且还在进行的动作。
To use the present perfect tense in the passive voice, use been (the past participle of the verb be) before the past participle of the main verb. The formula for using the present perfect in the passive voice is: [have/has] + [been] + [past participle] She has been given an award...
Tenses have certain rules, according to which a sentence is made. We will learn these rules next. Types of Tense There are three main tenses: Past Tense (This type of tense expresses an acton that occurs in the past) Present Tense (This type of tense expresses an acton that occurs in ...
However, there are two commonly used verbs (among others) that don’t follow these general rules. The first is the verbhave.In the third person singular,havebecomeshas(and not “haves”) when used in simple present tense. Ihavea headache. ...