fall about                         哄然大笑

fall across                        碰到；遇到

fall asleep                        睡着

fall behind                        落后；掉队；跟不上

fall down                          落下；跌到；倒塌；失败；

                                   证明是不行的                     

fall due                           到期

fall for / fall in love with sb    爱上…，迷恋…         

fall into line                     站好位置；排好队  

fall into the habit of…           养成…(不良)习惯               

fall off                           跌落；减少；脱落；衰退

fall on one’s knees               跪下              

fall on one’s ears                萦绕耳际;到某人耳里

fall out with                      为…闹翻(吵架、争执)         

fall over one another / each other 争先恐后；争夺；竞争

fall silent                        安静下来              

fall to pieces                     成为碎片