has been to 什么意思
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解决时间 2021-02-12 08:44
- 提问者网友：星軌
- 2021-02-11 20:37
has been to 什么意思
最佳答案
- 五星知识达人网友：独行浪子会拥风
- 2021-02-11 21:19
has been to
去过; 曾经去过某地; 到过; 去过......
He has been to Africa.
他到过非洲。
The technique has been to mutate the genes by irradiation or chemicals.
该技术是通过放射线照射或者使用化学方法使基因变异。
去过; 曾经去过某地; 到过; 去过......
He has been to Africa.
他到过非洲。
The technique has been to mutate the genes by irradiation or chemicals.
该技术是通过放射线照射或者使用化学方法使基因变异。
全部回答
- 1楼网友：动情书生
- 2021-02-11 21:58
has\have been 1.表示“是。。。。” 这种状况持续多久了 he has been a teacher for two years. 2. 表示“ 在。。。。”这种状况持续多久了 （后接副词） he has been there for two hours. has\have been in (接名词） 表示“ 在。。。。”这种状况持续多久了 he has been in america for two years. how long have you been in class(上课） today?
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