原则:连接词和主句专一

2并列句

eg: Failing hips can be replaced ,clinical depression controlled,cataracts removed in a 30-minute surgical procedure.

3主从复合

 

(2)宾语从句

动词+连接词+句子   I have learned that love ,not time,heals all wounds.

动词+宾语+连接词+句子

介词+连接词+句子

动词+it形式宾语+宾语+连接词+句子  make it clear that+句子

(3)表语从句

系动词+连接词+句子  The reason for my return is that I left my keys behinds.

(4)定语从句

1修饰和限定名词

2连接两个具有共同名词的句子 I have five books of which the red is my favorite

3表示因果逻辑关系

识别:名词(句子)+连接词+句子