英语翻译

问题描述:

英语翻译
1.他独自坐在房间里,窗帘拉拢了(draw)
2.患心脏病的中年人比普遍认为要多(generally)
3.没书的地方,肥沃的表尘土很容易被洪水冲走(wherever)
4.洪水没过了海岸,这在该地区是常有的事(which)
其中第四句 有一个句型叫做as is often the case 怎么和这个联用?

He sit in the room alone,drawing the curtain up.Mid-aged people who suffer the heart disease are generally more in amount than what we think.Wherever there are few trees,the topsoil is easy to be floo...