问题: I think he's held something back. 分析一下
                    I think he's held something back. 
是什么意思呢?
he's held something back 是被动吗?
请指点,谢谢
                    
                    解答: 
                    是 现在完成时   has held .  hold something back 意思是 隐瞒某事
					
                    
    
                    
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