They ___ singing songs for an hour. A. have been B. have C. are D. were 相关知识点: 试题来源: 解析 A。“唱了一个小时的歌并且还在唱”,现在完成进行时 have been singing。B 选项 have 后缺少 doing 不能体现持续进行。C 选项 are singing 现在进行时,没有体现持续一个小时。D 选项 were...
结果1 题目We ___ singing songs for an hour. A. has been B. have been C. is D. are 相关知识点: 试题来源: 解析 B。主语是 we,用 have been。A 选项 has been 与主语不搭配。C 和 D 选项是一般现在时,不符合题意。反馈 收藏
结果1 题目We ___ singing songs for an hour. A. have been B. has been C. are D. is 相关知识点: 试题来源: 解析 A。主语是 we,复数,现在完成进行时用 have been doing。表示我们唱歌这个动作从过去开始持续了一个小时。反馈 收藏
Have they been singing songs for an hour? A. Yes, they have. B. No, they haven't. C. They sang songs yesterday. D. They are singing songs now. 相关知识点: 试题来源: 解析 A或 B。此题考查现在完成进行时疑问句。A 和 B 正确。C 是一般过去时,D 是现在进行时。现在完成进行时强调从...
We ___ singing songs for an hour. A. has been B. have been C. is D. are 相关知识点: 试题来源: 解析 B。主语是 we,非第三人称单数,助动词用 have。现在完成进行时表示从过去某一时刻开始一直持续到现在的动作,have been + 动词现在分词。A 选项助动词错误。C 和 D 选项不是现在完成进...
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The girls ___ songs in the music room for an hour. A. have been singing B. have sung C. sing D. sang 相关知识点: 试题来源: 解析 A。for an hour 是现在完成进行时的标志。选项 A 是现在进行完成时。选项 B 是现在完成时。选项 C 是一般现在时。选项 D 是一般过去时。反馈 收藏 ...
百度试题 结果1 题目We ___ singing songs for half an hour. A. have been B. has been C. are being D. were being 相关知识点: 试题来源: 解析 A。主语是 we,用 have been,现在完成进行时表示一段时间内一直在进行的动作。反馈 收藏
A. has been B. have been C. is D. was 相关知识点: 试题来源: 解析 A。has been doing 是现在完成进行时,表示从过去某一时间开始一直持续到现在的动作,主语是 she,所以用 has been。B 选项 have been 主语错误;C 选项 is 现在进行时;D 选项 was 过去进行时,都不符合题意。反馈...