Dialogues

1. 比赛开始了！Bǐsài kāishǐ le!
The game has started!
The game has started in Chinese you can say 比赛开始了!
比赛 bǐsài, the third tone and the fourth tone, which means game.
开始 kāishǐ, to start. The first tone and the third tone.
了 le, a particle here.
比赛开始了！The game has started!

2. 谁和谁比？Shuí hé shuí bǐ?
Who versus who?
谁 shuí, the second tone. You can also say 谁(shéi), which seems to be more colloquial.
谁 shuí. It’s also pronounced in the second tone.
和 hé, means and.
谁 shuí, who.
比 bǐ, to compete.
谁和谁比? Who versus who?

3. 他打得真好！Tā dǎ de zhēn hǎo!
He is playing so well!
他 tā, he.
打 dǎ, to compete.
真 zhēn, really.
好 hǎo, well.
他打得真好. He is playing so well!

4. 好球！Hǎo qiú!
Good shot!
“Good shot” in Chinese you can say 好球!
好 hǎo, means good.
球 qiú, the second tone, which means ball. Here it refers to shot.
好球. Good shot!

5. 你希望谁赢？Nǐ xīwàng shuí yíng?
which team do you hope will win?
你 nǐ, is you.
希望 xīwàng, expect.
谁 shuí, who.
赢 yíng, to win.
你希望谁赢? Which team do you hope will win?