They were brave to defend their country against enemies.

　　他们勇敢地保家抗敌。

　　(1)defend ... from＝defend ... against

　　　　　　　　保护......免受......

　　(2)defense n. 防御，防卫，防守

　　in defense of 为了捍卫......

　　They digged caves under the ground to defend themselves against/from attack.

　　他们挖地洞来保护自己免受攻击。

　　Offense is sometimes the best defense.

　　进攻有时是最好的防御。

　　Hundreds of people gave their lives in defense of freedom.

　　数以百计的人为了捍卫自由而献出了自己的生命。

　　1．单句语法填空

　　①They built a bank as a defense (defend) against flooding.

　　②When the dog attacked me, I picked up a stick and tried to_defend (defend) myself.

　　③Mr. White stood up in defense of the boy, saying that he was not the one to blame.

　　2．完成句子

　　④我们应该保卫我们的祖国不受外来干涉。

　　We should defend_our_motherland_against any outside interference.

　　⑤难道有谁不愿为保卫自己的祖国而战吗？

　　Is there any man not willing to fight in_defense_of_his_country?

考点4 lead to 通往，通向；导致 　　[教材原句]

　　This invention made it much quicker and easier to reproduce written work and led to the first ever mass­production of books and literature.

　　这项发明使书的印刷变得更快、更方便，随之出现了书籍和文学作品的首次批量生产。

　　Too much work and too little rest often lead to illness.

　　过量的工作和过少的休息会引起疾病。

　　His carelessness led to his failure in the exam.

　　他的粗心大意导致他没有通过考试。

　　lead sb. to a place　　　带领某人去某地

　　lead sb. to do sth. 促使某人做某事

lead sb. in doing sth. 领导某人做某事