Japanese people prefer wooden houses. The reason why they do so is that it is very hot and humid in summer.
Is it wrong to use they do it for the underlined part?
teacherJapan Is it wrong to use they do it for the underlined part? Yes. They aren't really doing anything, Preferring is not an act, as such, and the "do" in "do it" is the transitive verb with object "it" being the preferring of wood.
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teacherJapanIs it wrong to use they do it for the underlined part?
Yes. They aren't really doing anything, Preferring is not an act, as such, and the "do" in "do it" is the transitive verb with object "it" being the preferring of wood. It almost amounts to "The reason they accomplish the preferring of wood is that it is v
teacherJapanJapanese people prefer wooden houses. The reasonwhy they do sois that it is very hot and humid in summer.
It's much better without 'why they do so'. 'why they do it' is not any better.
You state the reason immediately after the sentence that you are explaining, so a reference back to the Japanese preference for wooden houses i