Teaching in Guizhou was much more difficult than Wangshu hand thought.
这里为什么用had thought呢
是than引导的比较状语从句吗
为了简练,比较从句省略与主句重复的成分,补充完整可以是:
Teaching in Guizhou was much more difficult than Wangshu had thought it would be.
Teaching in Guizhou was much more difficult than Wangshu had thought it to be.
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