1、解釋說(shuō)明
例1：The English teacher wants just one thing from us: that we try our best. (英語(yǔ)老師只希望我們做到一點(diǎn)：全力以赴。)
例2：May I offer you a suggestion: don't drive without your seat belts fastened. (給你一個(gè)建議：開車一定要系安全帶。)
2、承接因果
例1：I turned to look at the children, but there weren't any in sight: they had all run away. (我轉(zhuǎn)過(guò)頭去看那些孩子，他們卻全無(wú)蹤影：他們都跑光了。)
例2：We found the place easily: your directions were perfect. (我們找到這個(gè)地方毫不費(fèi)力：你的導(dǎo)航太棒了。)
3、舉例或羅列
例1：There are only two tragedies in life: one is not getting what one wants, and the other is getting it. (人生的悲劇有兩種：一種是得不到自己想要的，一種是得到它。)
例2：For our camping trip, I brought various essential items: a lantern, a sleeping bag, food, water, and a flashlight. (關(guān)于露營(yíng)，我?guī)Я烁鞣N必備品：一盞燈，一個(gè)睡袋，食物，水，還有一個(gè)手電筒。)
4、用于引用
例1：The professor said: "It was horrible."(教授說(shuō)："這太可怕了。")
例2：In his most famous speech, he said: all men are created equal and must enjoy the equal rights that are given by God. (在他最的演講中，他說(shuō)：人人生而平等，必須享受上帝賦予的平等權(quán)利。)
5、隔開正副標(biāo)題
例1：Web Directory: World and Non-U.S. Economic Data(網(wǎng)絡(luò)目錄：世界與非美國(guó)經(jīng)濟(jì)數(shù)據(jù))
例2：Math Application: Using Calculus to Determine the Age of Rocks (數(shù)學(xué)應(yīng)用：利用微積分測(cè)定巖石年齡)
6、用于正式信件的稱呼后(美式)
例1：Dear Mr. Lee: We were very honored to have you come visit our company. (親愛(ài)的李先生，非常榮幸您來(lái)我公司參觀考察)
7、表示時(shí)間
例1：The train is to leave at 4:45 pm. (火車下午4:45開)
8、表示比例
例1：The proportion of men to women is 3:5. (男女比例是3:5)
例1：The English teacher wants just one thing from us: that we try our best. (英語(yǔ)老師只希望我們做到一點(diǎn)：全力以赴。)
例2：May I offer you a suggestion: don't drive without your seat belts fastened. (給你一個(gè)建議：開車一定要系安全帶。)
2、承接因果
例1：I turned to look at the children, but there weren't any in sight: they had all run away. (我轉(zhuǎn)過(guò)頭去看那些孩子，他們卻全無(wú)蹤影：他們都跑光了。)
例2：We found the place easily: your directions were perfect. (我們找到這個(gè)地方毫不費(fèi)力：你的導(dǎo)航太棒了。)
3、舉例或羅列
例1：There are only two tragedies in life: one is not getting what one wants, and the other is getting it. (人生的悲劇有兩種：一種是得不到自己想要的，一種是得到它。)
例2：For our camping trip, I brought various essential items: a lantern, a sleeping bag, food, water, and a flashlight. (關(guān)于露營(yíng)，我?guī)Я烁鞣N必備品：一盞燈，一個(gè)睡袋，食物，水，還有一個(gè)手電筒。)
4、用于引用
例1：The professor said: "It was horrible."(教授說(shuō)："這太可怕了。")
例2：In his most famous speech, he said: all men are created equal and must enjoy the equal rights that are given by God. (在他最的演講中，他說(shuō)：人人生而平等，必須享受上帝賦予的平等權(quán)利。)
5、隔開正副標(biāo)題
例1：Web Directory: World and Non-U.S. Economic Data(網(wǎng)絡(luò)目錄：世界與非美國(guó)經(jīng)濟(jì)數(shù)據(jù))
例2：Math Application: Using Calculus to Determine the Age of Rocks (數(shù)學(xué)應(yīng)用：利用微積分測(cè)定巖石年齡)
6、用于正式信件的稱呼后(美式)
例1：Dear Mr. Lee: We were very honored to have you come visit our company. (親愛(ài)的李先生，非常榮幸您來(lái)我公司參觀考察)
7、表示時(shí)間
例1：The train is to leave at 4:45 pm. (火車下午4:45開)
8、表示比例
例1：The proportion of men to women is 3:5. (男女比例是3:5)