alternately
                    
      英 [ɒlˈtɜː.nət.li]                            
                        美 [ɑːlˈtɝː.nət.li]                    
                    
                    
                    
                 
                
             
                        
            
                1. altern- + -ate + -ly.
2. => one after the other, by turns.
3. Alternate means "by turns;" alternative means "offering a choice." Both imply two kinds or things.            
                        
            
                
- alternately (adv.)
- early 15c., from alternate (adj.) + -ly (2).
 
                
- 1. He could alternately bully and charm people. 
- 他一会儿欺负人一会儿取悦人。
- 2. She became alternately angry and calm. 
- 她时而愤怒时而平静。
- 3. This movie is by turn ( = alternately ) terrifying and very funny. 
- 这部电影一会儿令人毛骨悚然,一会儿滑稽可笑.
- 4. We cleaned the classroom alternately. 
- 我们轮流清扫教室.
- 5. The two methods can be used alternately. 
- 两种方法可交互使用.