1.protect的基本意思是“保护,保卫”,即保护某人或某物不受伤害或破坏,还可指以征收进口税“保护”国内工业。
2.protect是及物动词,接名词或代词作宾语,可用于被动结构,也可接介词against〔from〕引起的短语充当补足语的复合宾语。

protect against〔from〕(v.+prep.)
保护,保卫 keep sb/sth safe from harm, etc.; defend sb/sth
▲protect sb/sth against〔from〕 sb/sth
This medicine will protect you against a return of the illness.这种药会防止你的疾病复发。
These tree belts effectively protect the farmland against shifting sand.这些防护林带有效地保护了农田,使之免受流沙侵袭。
A line of forts was built along the border to protect the country against attack.在边界沿线修筑了堡垒保护国家免受攻击。
This special cream will protect your skin from the burning sun.这种独特的乳霜可以保护皮肤免受烈日的伤害。
She protected her eyes from the sun with her hand.她用手遮住太阳以保护她的眼睛。
He raised his arm to protect his face from the blow.他抬起手臂保护脸免受打击。
May God protect you from harm this night.愿上帝保佑你今夜免受伤害。
You should protect the children from the cold.你们应该保护孩子不让其受冻。
It's hopeless trying to protect your child from the harmful effect of television until the material improves.在电视内容改进之前,想使你的孩子不受电视的有害影响是没用的。
◇ 用于be ～ed结构
His throat was protected by a scarf from the night air.他用围巾来保护嗓子以防晚上的凉风。
We must be protected against sudden attacks.我们必须对突然袭击做好戒备。

用作及物动词
▲S+～+n./pron.
May God protect you.愿上帝保佑你。
It is my duty to protect my sisters.保护姐妹是我的责任。
We should protect children.我们应该保护儿童。
A football player wears a helmet to protect his head.橄榄球运动员戴了头盔来保护脑袋。
Such a thin coat can't protect the cold in such mountain area.这么薄的外衣在这个山区是无法御寒的。
They were fighting to protect their country.他们在为保卫祖国而战。
They tried their best to protect home industries.他们尽全力保护国内工业。
I must protect my own interests.我必须保护自己的利益。
The union was formed to protect the miners' rights and interests.建立起工会是为了保护矿工的权益。
◇ 用于be ～ed结构
These rare birds are protected by special laws—they are a protected species.这些珍禽受到专门法令的保护——它们是受保护的物种。
Electric wires are protected by a rubber covering.电线靠橡皮外壳来保护。
Women and children's rights are protected by law in our country.在我国,妇女和儿童的权利受法律保护。
The country's car industry is so strongly protected that foreign cars are rarely seen there.该国对本国的汽车工业严加保护,外国汽车甚为罕见。

protect from, protect against
protect from和protect against都是“保护…以防…”“防御…”的意思,其区别是:
1.当防御的对象是“危害”或较小的事情,如冷气等时,要用protect from; 当防御的对象是“袭击”或较大的事情,如天灾时,要用protect against。
2.protect against强调防止against的宾语做某事; protect from则强调保护protect的宾语不受…。例如:
protect A from B's attack
保护A不受B的攻击
protect A against B's attack
防止B攻击A
protect, defend, guard, safeguard, shield
参见defend条。

［同义词］   convoy, defend, guard, safeguard, save, secure, shelter
［反义词］   attack, threat
［词源］  ＜拉丁语protegere(保护)