答案1. My mum has been worked in the post office for 16 years. 2. My teacher has been ill for three days. 3.I haven't danced since your birthday party. 4.My uncle and aunt have had their car for three months. 解析 1.我的妈妈在邮局工作16年了 。for+时间段,现在完成时的标志 2....
1. He has lived there for a year. 2. We have been at this school since we were eleven. 3. I have had it for a long time. 4. He has been a teacher since 2015. 5. They have been married since spring. 1. 题目要求使用现在完成时和for或since改写句子。 2. 现在完成时的结构是have...
Using the present perfect, we can define a period of time before now by considering its duration, with for + a period of time, or by considering its starting point, with since + a point in time. FOR and SINCE can also both be used with the past perfect.
Using the present perfect, we can define a period of time before now by considering itsduration,withfor +a period of time,or by considering itsstarting point, withsince +a point in time. FOR and SINCE can also both be used with the past perfect. SINCE can only be used with perfect ten...
Using the present perfect, we can define a period of time before now by considering its duration, with for + a period of time, or by considering its starting point, with since + a point in time. FOR and SINCE can also both be used with the past perfect. SINCE can only be used with...
Present perfect for & since Read the following article. Pay special attention to the words in bold.How many times have you wanted a quick something and gone to your computer to google it? The word has become synonymous with search. Since its start in 1998.Google has been one of the most...
1. I have had my dog since 2021. 2. I think Fred has been here since six o'clock. 3. The new shop has been open since yesterday. 改写后的解析: 这三句话都需要使用现在完成时,并结合“for”或“since”来表示持续的时间。 1. “since 2021”表示从2021年开始到现在,所以答案为:I have had...
Present perfect tense 1. present perfect-form The present perfect of any verb is composed of two elements :the appropriate of the main verb is base+ed :played,arrived,looked, for regular verbs ,see the table of irregular verbs in the section called verbs: 1. present perfect ,function The ...
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...
It is important to note that present perfect cannot be used with specific past time expressions that refer to a specific point in time, such as "yesterday" or "last week". Instead, it is commonly used with adverbs and adverbial phrases that indicate a duration of time, such as "for," ...