The room had a wall through which the scientists could obser

学习 时间:2026-08-14 06:54:25 阅读:1086
The room had a wall through which the scientists could observe what happened without being seenThe room had a wall 后面是否应该加逗号呢?

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2026-08-14 06:54:25

引导词是through which,这里有介词,不能用that。不是所有的从句都用that 引导。从句部分改回去是the scientists could observe through the wall。这样是不是能明白了? 再问: 明白了,多谢啦

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    2026-08-14 06:54:25

    引导词是through which,这里有介词,不能用that。不是所有的从句都用that 引导。从句部分改回去是the scientists could observe through the wall。这样是不是能明白了? 再问: 明白了,多谢啦

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