hold: is widely applicable and may imply mere possession or control, OR possession or control firmly maintained: tried to keep a ~ on his temper.          习语keep a hold on控制         possess拥有占用，这里比喻为"抓住"


grip: regularly suggests a firm or tenacious hold: had a firm ~ on the reins of power.


grasp: differs from grip chiefly in suggests a power to reach out and get possession or control of something: success was almost within his ~.


clutch: implies a seizing and holding as if with avidity and rapacity of bird of prey: stayed out of the executioner's ~es.         强调紧紧抓住to hold something tightly，如he clutched the child to him他紧紧地抱住小孩，如she stood there, the flowers still clutched in her hand她站在那里，手里仍然紧握着花束，如I clutched on to the chair for support我紧紧抓住椅子撑着身体      例句中clutch表示势力或控制力


hold抓住: 应用广泛，可泛指占有控制，或紧紧占有控制，grip牢牢抓住: 表示牢牢紧抓不放(tenacious)，grasp伸手抓住: 表示伸手抓住，clutch紧抓: (像猎鸟一样)急切贪婪地抓住

记忆方法: 1）抓住的意思是占有控制mean the power of getting or keeping in possession or control.