十七. there be句式
	
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	   97.There are a bag and several books on the table.
	
	  There be 句式遵循谓语动词就近原则,a bag为单数,所以把are改为is。
	
	  98.There were several people stood at the back of the room.
	
	  There be句式的谓语动词为be动词,句中其他的动词应为非谓语动词。所以把stood改为standing.
	
	 

 
 
 
 
