简单句+并列词+简单句

简单句两大模式：主系表/主谓

for因

I am late for I got up late this morning.

主系表      主谓

and并列

I enjoy listening to music and I like swimming.

but转折

You spend much money on clothes but I save money.

so果

My car broke down on the way so I got a taxi.

主谓宾and 谓语

A year ago, some students who are older than I took examinations called College Entrance Exam and failed.

Some students took examinations and failed.