Walking slowly down the road, he saw a woman accompanied by two children.
沿着马路漫步时,他看到了一个带着两个孩子的女人。
Walking这一动作的发出者是整个句子的主语he,而不是a woman。如果想让这一动作的发出者变为a woman,这个句子需重写:
He saw a woman accompanied by two children, walking slowly down the road.
他看见一个带着两个孩子的女人正沿着马路漫步。
连词或介词开头的分词短语、做同位语的名词、形容词和形容词短语位于句首时,也应遵守这条规则。例如:
如果不遵守这条规则,句意通常会荒唐好笑。例如:
Being in a dilapidated condition, I was able to buy the house very cheap.
我破旧不堪、摇摇欲坠,所以能以超低价买下了这房子。
Wondering irresolutely what to do next, the clock struck twelve.
闹钟迟疑着接下来要做什么,便敲了十二点。