原发布者:omitting
1．表示原因 1）There are three reasons for this． 2）The reasons for this are as follows． 3）We have good reason to believe that．．． 4) There are several causes for this significant growth in...， firstly .... secondly...， last but not least (finally)... 5) There are many (different/several) reasons for this change (decrease/growth) of... For one thing，...For another，.... ，In addition，... 6). The chief reason why...is that... 2．表示好处 1）It has the following advantages． 2）It benefits us quite a lot． 3）It is of great benefit to us． 例如：Books are like friends．They can help us know the world better，and they can open our minds and widen our horizons．Therefore，reading extensively is of great benefit to us． 3．表示坏处 1）It has more disadvantages than advantages． 例如：However，everything divides into two．Television can also be harmful to us．It can do harm to our health and make us lazy if we spend too much time watching television． 4．表示重要、必要、困难、方便、可能 1）It is important（necessary，difficul