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    —I don’t know if it          tomorrow.
     —If it       ,I’ll stay at home.
    A.will rain, will rain      B.rains, will rain      C. will rain,rains
    			
    


			
    

		
    
		
		
	
    
		
    
			
    
				
    
				
    C
    if既可以引導賓語從句又可以引導狀語從句。if充當賓語從句的連接詞時，相當于whether，詞義為“是否”，遵循賓語從句的時態(tài)規(guī)則，可根據(jù)語境選擇任何時態(tài)；充當從屬連詞，引導條件狀語從句時，詞義為“如果”，若主句中的謂語動詞用一般將來時，則從句中的謂語動詞通常用一般現(xiàn)在時表示將來。
    				
    
							
    
			
    
			
    
			
			
    
		
    
	
    

		
    

		





			
    
		
    
		
				
    
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