I am preparing dinner for everyone this evening.
今天傍晚我将会为大家准备晚餐。
Can I help you with preparing dinner?
我能帮助你准备晚餐吗？
My mother is preparing dinner when I get home every day.
每天我回家的时候妈妈总是在准备晚饭。
I was busy preparing the dinner when someone rang the door bell.
我正在忙着准备晚饭，这时突然有人按门铃。
He took a bath while I was preparing dinner.
我准备晚餐的时候他在洗澡。
He took a bath while I was preparing dinner.
我准备晚餐的时候他在洗澡。
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