??? 情景例句
When will you be through with your homework?
你的家庭作業什么時候可以做完？
There is a time to speak and a time to be silent.
該說話時說話，該沈默時沈默。
One had winter we watched the river creep up the lower meadows.
有一年冬天，天氣不好，我們眼看著河水浸沒了地勢較低的草場。