Question

It was nine o'clock ___I woke up in the morning.选that还是when

Answer 1

选when 这里是时间状语从句，你可以顺着读 When I woke up in the morning，it was nine o'clock.
如果选择that，that本身不能引导状语从句，如果想要理解为定语从句，那么that就要在从句中充当成分，很显然I woke up in the morning已经是个完整的句子了 就算想表达I woke up in the morning at nine o'clock that指代的是nine o'clock 那么介词“at”就不可以省略 然后要把介词提前就是It was nine o'clock at that I woke up in the morning 但是这句也是错的
因为根本不能用 at that 只能用in that来引导从句
还有前面一楼说到的强调句问题
强调句就是去掉“it is/was ……that……”剩下的可以组成一句完整的句子，但是这句缺了at
你去掉“it is/was ……that……”就变成了i woke up in the morning nine o'clock 所以不成立

Answer 2

填 when 在这里是when时间状语从句 可翻译成“当我醒来的时候已经是九点了。”

It was at nine o'clock that i woke up in the morning. 这里才填that 而且这里是个强调句型

Answer 3

WHEN 时间状语从句。不是定语从句。 我早上醒来的时候 已经是9点钟了

Answer 4

when...

Answer 5

when

Answer 6

when