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. APP内打开 结果2 举报 很显然第一句话是错误的,因为begin的过去式began,而它的过去分词是begun在这里为现在完成时,它的动词结构是have/has+done(即动词的过去分词)希望对你有所帮助! 查看完整答案 结果3 举报 前面一句是错的,...
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...
最确保robots.[1] Recently it had begun experimenting with a近,该公司开始对一个家用机器人进行试验。它将由拉③ household adj.家household③ robot.It was going to be tested out by里的夫人克莱尔来测试。庭的;家用的n.一家Larry's wife, Claire.克莱尔并不想把机器人;家庭④test out 检验;测试[1]...
It was easy to cry, because she was so cold and miserable, but the effect was startling.Frank could not have been more embarrassed or helpless if she had suddenly begun disrobing.He clicked his tongue against his teeth several times, muttering“My!My!”and made futile gestures at her.A d...
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. ...
时为止；该词与完成时连用。本句中by后面接的时间状语是I got to the office这是一个过去时的时间，故使用过去我才是。句意：到外面来的办公室的时候，会议已经开始了。故A正确。点评：连词by到…时为止；该词经常与完成时连用，如果后面是现在的时间，句中就使用现在完成时；如果后面是过去的时间...
When Major saw that they had all made themselves comfortable and were waiting attentively he cleared his throat and began: ‘Comrades, you have heard already about the strange dream that I had last night. But I will come to the dream later. I have something else to say first. I do not...
have (already) gone to … have been in / at … for (two years) has come to… has been here since (1990) (had) left … (had) been away from …arrived … been in …died been dead begun been on ended been over bought... had…borrowed… kept…joined … been in …或者使用下面...
A.I beganB.I had begunC.have I begunD.did I begin相关知识点: 试题来源: 解析 D :句意:仅一年后,我就开始看到我的试验的结果了。本题考察倒装结构,当"only"置于句首时,后面要用半倒装结构,根据句中的时间线索,我们发现本句还应使用过去时态。
Larry Belmont worked for a company that made robots. Recently it had begun experimenting with a household robot. It was going to be tested out by Larrys wife. Claire 拉里・贝尔蒙特在一家机器人制造公司工作。该公司...