Some people like coffee, while others like tea.有些人喜歡咖啡, 而有些人喜歡茶。

I was walking along the street when I came across him. 我正街上行走，我突然遇到了他。

2. 復(fù)合句：由“主句+從句”組成。從句有定語(yǔ)從句、狀語(yǔ)從句(時(shí)間、地點(diǎn)、原因、條件、目的、結(jié)果、讓步、比較)、名詞性從句(主語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ))。

1. 定語(yǔ)從句

He who gains time gains all. 贏(yíng)得時(shí)間者贏(yíng)得一切。

God helps those who help themselves自助者天助。

2.狀語(yǔ)從句

When he arrived home, it was just nine o'clock. 當(dāng)他到家時(shí)，正是九點(diǎn)鐘。

While he was in London, he studied music. 當(dāng)他在倫敦時(shí)，他學(xué)習(xí)音樂(lè)。(時(shí)間)

As he grew older, he became more intelligent. 隨著他年齡的增長(zhǎng)，他變得更有才智了。(時(shí)間)

Where there is a will, there is a way. 有志者事竟成。(地點(diǎn))

Where there is smoke, there is fire. 有煙之處就有火。無(wú)風(fēng)不起浪。

Since you ask, I will tell you.你既然問(wèn)，我就告訴你。(原因)

I did it not because I liked it but because I had to do it.我做這件事，不是因?yàn)槲蚁矚g做而是因?yàn)槲也坏貌灰觥?原因)

You may borrow this book as long as you promise to give it back. 只要你答應(yīng)歸還，你就可以把這書(shū)借走。(條件)

Once printed, this dictionary will be very popular! 一旦出版，這本詞典將會(huì)非常暢銷(xiāo)！(條件)

I stopped so that you could catch up. 我停下來(lái)以便你能趕上。(目的)

She was so tired that she fell. 她是如此的疲勞以致于倒下了。(結(jié)果)

Although he is a child (=Child as he is),  he knows to help others.雖然他很富, 但他并不幸福。(讓步)

No matter how difficult English is, I’ll try my best to learn it well. 不管英語(yǔ)有多難，我都要盡力把它學(xué)好。(讓步)

Actions speak louder than thinking. 心動(dòng)不如行動(dòng)。(比較)

3. 名詞性從句

What's done cannot be undone. 木已成舟, 無(wú)法挽回。(主語(yǔ))

I fell strongly that I can make it. 我堅(jiān)信我一定能成功。(賓語(yǔ))

He is not what he used to be. 他已不是舊日的他了。(表語(yǔ))