he usually spends one hour on his homework./he ususlly spends one hous doing his homework.为什么第二句用hous是写错了吗不好意思，写错了。除了 spend time on sth / spendtimedoing sth.
take 应该是it 作主语！不好意思，能把Spend time doing sth完整写下来吗完整写下来是什么意思？整个翻译一下我拿给女儿看He usually spends one hour doing his homework.没事的，两种都可以用。能帮到你，很高兴。😀