精选优质文档-倾情为你奉上2017年六级英语常用句式一、 分析原因常用句型1. The reasons can be listed as follows. For one thingFor another2. What has contributed to this problem? In the first placeIn the second place3. Perhaps the main/primary/most important reason is4. It is no easy to identify the reason for which involve several complicated factors.5. A number of factors could account for/lead to/contribute to/result in/be conductive to6. One may trace/attribute this problem to7. This
