重点讲解：
1. cling to 紧紧抓住；抱紧；
Another man was rescued as he clung to the riverbank.
另外一个人因为紧紧攀住河堤而获救LdDAJ(b)E0F~ZI。
2. be prone to 有（不好的）倾向的；易于…的；很可能…的；
Women and children are prone to become pitiable victims of war.
妇女和儿童很容易成为可怜的战争受害者Jv@%5wJF*mEk|QPsh@^S。
3. ought to do sth. 应当，应该；
You ought to get out of the house more.
你应该多到户外去走走U#he+X=Tm=jRX。
4. describe as 把…说成；把…称为；认为；
He described the attack as the work of savages.
他把这次袭击称为野蛮行径W0Mh|)Wh^s。