Expressing "in addition" with "lingwai"

另外 (lìng wài) can be used to express "in addition," often with 还 or 还 used in the following phrase.

Using as a Conjunction

⋯⋯，另外，⋯⋯

希望你不要再迟到了。另外，你应该穿得正式一点。Xīwàng nǐ bùyào zài chídào le. Lìngwài, nǐ yīnggāi chuān de zhèngshì yīdiǎn.I hope you won't be late again. In addition, you should also dress a little more formally.
美国跟中国很不一样，美国没有中国人口多。另外，美国是发达国家，中国是发展中国家。Měiguó gēn Zhōngguó hěn bù yīyàng, Měiguó méiyǒu Zhōngguó rénkǒu duō. lìngwài, Měiguó shì fādá guójiā, Zhōngguó shì fāzhǎnzhōng guójiā.America is very different from China. Its population is not as big as China. In addition, America is a develop country while China is a developing country.

另外 + [Verb Phrase]

这些是另外补充也很重要。What I just said is very important, but what everyone added is also very important.
这里是 VIP 室，要另外付费才能用。This is the VIP section. You will have to pay more in order to use it.
另外。We close at 9pm every day. You need to find another place if you still want to study after that.

When used as a pronoun, 另外 can also be used to denote "the other" and there is no need to add 的 after 另外.

另外 + Noun Phrase

我有两个手机，一个是小米，另外一个是 iPhone 。Wǒ yǒu liǎng gè shǒujī, yī gè shì Xiǎomǐ, lìngwài yī gè shì iPhone.I have two cell phones. One is Xiao Mi, and the other is iPhone.
她有两套房子，一套自己住，另外一套租出去了。Tā yǒu liǎng tào fángzi, yī tào zìjǐ zhù, lìngwài yī tào zū chūqù le.She has two houses. She lives in one and rents out the other one.
我买了三张票，一张是我的，另外两张是给朋友的。Wǒ mǎi le sān zhāng piào, yī zhāng shì wǒ de, lìngwài liǎng zhāng shì gěi péngyou de.I bought three tickets. One is for myself, and the other two are for my friends.
这几本书我今天拿走，另外几本下次再拿。Zhè jǐ běn shū wǒ jīntiān názǒu, lìngwài jǐ běn xià cì zài ná.I will take these books today. I can take the others next time.
跟他一起去的另外两个人已经死了。Gēn tā yīqǐ qù de lìngwài liǎng gè rén yǐjīng sǐ le.The other two people who went with him already died.