这是一个并列句
I是主语've worked 是谓语with children是方式状语 before是时间状语,so是并列连词
I是主语 know是谓语 后面是带连接代词的不定式短语作宾语 what是不定式的宾语
to expect是不定式 in my new job是不定式的地点状语.
I've worked with children before,so I know what to expect in my new job.这个是并列句.so是并列连词连接两个简单句.在第二个并列句中 I (主语)know(谓语) what to expect(宾语) in my new job.(状语)