Susan decided not to write her resignation in the office because she didn't want her colleagues to know what she was doing?
请问老师为啥要用was doing而不是had done?
逻辑决定的。她决定不在办公室写辞职信,就是因为不想让同时直达她在干什么,而不是干了什么。所以用进行体而不用完成体。这有什么奇怪呢?
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