一、并列句
(一)并列句的4种类型
1．表并列、递进或顺承关系：and，both...and...，
neither...nor...，not only...but also...。
The earth is one of the sun's planets，and the moon is our satellite.
地球是太阳系中的一颗行星，月亮是地球的卫星。
2．表转折、对比关系：but，yet，while。
①The problem was a little hard，yet I was able to work it out.这道题有点难，然而我却把它做出来了。
②The winter in Beijing is very cold while that of
Kunming is warm.
北京的冬天很冷，然而昆明的冬天却很暖和。
3．表选择关系：or，otherwise，or else，either...or...，not...but...。
Now you can either have a rest or you can go to the cinema.现在你可以休息，也可以去看电影。
