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英语被动式 介词Printing was invented in China . printing前有必要加冠词吗? i

来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/10/06 14:08:22
英语被动式 介词
Printing was invented in China . printing前有必要加冠词吗? in可不可以换成by?
on 可不可以换成into mechine?
1.不用加
2.不可以换,in china表地点,by表动作主体,即动作实施者
3.写详细点,看不明白
英语被动式 介词Printing was invented in China . printing前有必要加冠词吗? i 一英语阅读Wood-block printing was invented sometime between the 4 英语冠词此句中的用法(_) Ancient China gave the world (_)printing,(the) 一道英语冠词题____compass was invented in ancient China.为什么填"The"?" Chinese people invented printing 中文的意思 "Chinse people invented printing."的中文 请问专业人士：flexo printing ink,screen printing ink,pad printing i offset printing 与 4 color printing一样吗? pearlite printing screen printing quadric printing 冠词前能不能加介词?