解析 现在完成时由have/has + v-ed分词构成、而begin的过去分词是begun,began是过去时.begin-began-begun所以第一个句子是错误的.结果一 题目 i have began the lesson.和 i have begun the lesson.有什么区别? 答案 现在完成时由have/has + v-ed分词构成、而begin的过去分词是begun,began是过去时.begin-...
你知道如何提升自己的外語能力嗎❓你要做的就是讓母語者來訂正你的寫作！使用HiNative，免費讓母語者來...
后面是错的，因为完成时的构成是have+done过去分词，但began不是过去分词，是过去式。
因为后面用的句子是完成时“I haven't had much spare time”，所以这个since应该是时间状语翻译为“自从”，在这种用法时，他后面接的时间状语要是过去的某一个时间点，所以用过去时began。
A. he began B. ha has begun C. did he begin D. that ha has begun 26. who would like to go on the trip should put their names on the list. A. Those B. These C. Somebody D. The ones 27. A bottle weighs less after air is taken out, proves that air has weight. ...
The play【 may be begun or may have begun 】already?哪个对? 正确的是:The play may have begun already. 因为begin常用做【不及物动词】,一般不用被动语态. 又如: The problems began last November.(不说:The problems was begun last November.) 问题在去年11月份开始出现. 分析总结。 因为begin常用做...
sing-sang-sung ring-rang-rung drink-drank-drunk swim-swam-swum begin-began-begun
The play【 may be begun or may have begun 】already? 哪个对？正确的是：The play may have begun already.因为begin常用做【不及物动词】，一般不用被动语态。又如：The problems began last November.(不说：The problems was begun last November.)问题在去年11月份开始出现。
A.beginB.began C.have begunD.had begun 试题答案 在线课程 【答案】B 【解析】 句意:自从20世纪90年代初人们开始享受这项新技术的好处以来,CDs的销量大大增加。考查时态辨析题。本句是关系副词when引导的定语从句,修饰the early 1990s。从句的意思是:当时(指in the early 1990s)人们开始喜欢这一新科技带来的...
The Los Angeles Math Circle, held at the University of California, Los Angeles, began in 2007 with 20 students and now has more than 250. 出自-2017年6月阅读原文 That letter, which includes several concerns Morgan has with the plan, was originally obtained by The Commercial Appeal in Memphis...