从句子入手，突破书面表达
由词及句，由句谋篇。写好句子是做好书面表达的重中之重。
⒈ 打破常规，变换句子开头，使表达多样化，会增强表达效果。例如：
I have no idea how I can get to the railway station.
我不知道如何去火车站。
Given more attention，the trees could have grown better.
假如多给些照顾，那些树会长得更好。
Not receiving any letter from him, I gave him a call.
由于没有收到他的信，我给他打了电话。
So frightened was he that he did not dare to move an inch.
他那么害怕，一动也不敢动。
It doesn't appear that we'll have a sunny day tomorrow.
看来我们明天不会碰上好天气。
