Potential complements: can or can't?

现在已经很晚了，还买得到票吗？

Xiànzài yǐjīng hěn wǎn le, hái mǎi de dào piào ma?

It's very late now. Can I still buy tickets?

你别担心，买得到。

Nǐ bié dānxīn, mǎi de dào.

Don't worry, you can buy it.

晚上七点以前你回得来吗？

Wǎnshang qī diǎn yǐqián nǐ huí de lái ma?

Can you come back before seven o'clock in the evening?

回得来。

Huí de lái.

Can come back.

今天的作业一个小时做得完吗？

Jīntiān de zuòyè yí ge xiǎoshí zuò de wán ma?

Did you finish today's homework in one hour?

今天的作业太多，一个小时做不完。

Jīntiān de zuòyè tài duō, yí ge xiǎoshí zuò bù wán.

There is so much homework today that I can't finish it in an hour.

老师讲的话你听得懂听不懂？

Lǎoshī jiǎng de huà nǐ tīng de dǒng tīng bù dǒng?

Do you understand what the teacher says?

你不戴眼镜的时候看得见看不见？

Nǐ bú dài yǎnjìng de shíhou kàn de jiàn kàn bú jiàn?

Can you see without your glasses?

现在去，晚饭前回得来回不来？

Xiànzài qù, wǎnfàn qián huí de lái huí bù lái?

Go now. Can you come back before dinner?

我一点儿也听不懂她唱的是什么？

Wǒ yì diǎnr yě tīng bù dǒng tā chàng de shì shénme?

I don't understand what she is singing at all?

晚上我有事，去不了。

Wǎnshang wǒ yǒushì, qù bù liǎo.

I have something to do tonight and can't go.

我的眼睛不太好，坐得太远看不清楚。

Wǒ de yǎnjīng bú tài hǎo, zuò de tài yuǎn kàn bù qīngchu.

My eyes are not very good and I can't see clearly when I sit too far away.

这个故事你看得懂看不懂？

Zhè ge gùshi nǐ kàn de dǒng kàn bù dǒng?

Do you understand this story or not?

我看得懂。

Wǒ kàn de dǒng.

I understand.

我们去看看吧，也许买得到票。

Wǒmen qù kànkan ba, yěxǔ mǎi de dào piào.

Let's go check it out and maybe get tickets.

我没有钥匙，进不去。

Wǒ méiyǒu yàoshi, jìn bú qù.

I don't have a key and can't get in.

作业不太多，一个小时做得完。

Zuòyè bú tài duō, yí ge xiǎoshí zuò de wán.

The homework is not too much and can be done in an hour.

你听得懂老师讲课吗？

Nǐ tīng de dǒng lǎoshī jiǎng kè ma?

Can you understand the teacher's lecture?

我听得懂。

Wǒ tīng de dǒng.

I understand.

你看得清楚黑板上的字吗？

Nǐ kàn de qīngchu hēibǎn shàng de zì ma?

Can you see the writing on the blackboard clearly?

我没戴眼镜，看不清楚。

Wǒ méi dài yǎnjìng, kàn bù qīngchu.

I don't wear glasses, so I can't see clearly.

明天要考试了，你去得了吗？

Míngtiān yào kǎoshì le, nǐ qǔ de liǎo ma?

There is an exam tomorrow, can you go?

明天我很忙，去不了了。

Míngtiān wǒ hěn máng, qù bù liǎo le.

I'm very busy tomorrow and can't go.

她自己走得了吗？

Tā zìjǐ zǒu de liǎo ma?

Can she leave on her own?

她的腿伤了，自己走不了。

Tā de tuǐ shāng le, zìjǐ zǒu bù liǎo.

Her leg was injured and she couldn't walk on her own.

你吃得了这么多菜吗？

Nǐ chī de liǎo zhème duō cài ma?

Can you eat so much food?

我吃得了。

Wǒ chī de liǎo.

I can eat it.

我吃不了这么多菜。

Wǒ chī bùliǎo zhème duō cài.

I can't eat so many dishes.

这个教室坐得下五十个人吗？

Zhè ge jiàoshì zuò de xià wǔshí ge rén ma?

Can this classroom accommodate fifty people?

这个教室太小，坐不下。

Zhè ge jiàoshì tài xiǎo, zuò bú xià.

This classroom is too small to fit in all seats.

你把我的毛衣装进去吧。

Nǐ bǎ wǒ de máoyī zhuāng jìnqù ba.

You put my sweater in it.

这个箱子太小，你的毛衣太大，装不下。

Zhè ge xiāngzi tài xiǎo, nǐ de máo yī tài dà, zhuāng bú xià.

This box is too small and your sweater is too big to fit in it.

今天我有事，不能去。

Jīntiān wǒ yǒu shì, bù néng qù.

I have something to do today and can't go.

今天我有时间，能去。

Jīntiān wǒ yǒu shíjiān, néng qù.

I have time today and can go.

今天她有时间，去得了。

Jīntiān tā yǒu shíjiān, qù de liǎo.

She has time today and can go.

那儿太危险，你不能去。

Nàr tài wēixiǎn, nǐ bù néng qù.

It's too dangerous for you to go there.

这个东西不是你的，你不能拿。

Zhè ge dōngxi bú shì nǐ de, nǐ bù néng ná.

This thing isn't yours, you can't take it.

这个箱子太重了，我一个人拿不了。

Zhè ge xiāngzi tài zhòng le, wǒ yí ge rén ná bù liǎo.

This box is too heavy for me to carry alone.

屋子里太暗了，我看不见。

Wūzi lǐ tài àn le, wǒ kàn bú jiàn.

It was too dark in the room and I couldn't see.

你看得懂这个句子吗？

Nǐ kàn de dǒng zhè ge jùzi ma?

Do you understand this sentence?

我看不懂这个句子。

Wǒ kàn bù dǒng zhè ge jùzi.

I don't understand this sentence.

你看得懂这篇课文吗？

Nǐ kàn de dǒng zhè piān kèwén ma?

Do you understand this text?

我看得懂这篇课文。

Wǒ kàn de dǒng zhè piān kèwén.

I can understand this text.

你看得见黑板上的字吗？

Nǐ kàn de jiàn hēibǎn shàng de zì ma?

Can you see the words on the blackboard?

我看不见黑板上的字。

Wǒ kàn bú jiàn hēibǎn shàng de zì.

I can't see the writing on the blackboard.

你听得见我的声音吗？

Nǐ tīng de jiàn wǒ de shēngyīn ma?

Can you hear my voice?

我听不见你的声音。

Wǒ tīng bú jiàn nǐ de shēngyīn.

I can't hear you.

你看得见前边的人吗？

Nǐ kàn de jiàn qiánbiān de rén ma?

Can you see the person in front of you?

天太黑了，我看不见。

Tiān tài hēi le, wǒ kàn bú jiàn.

It was too dark and I couldn't see.

你看得见前边的那座桥吗？

Nǐ kàn de jiàn qiánbiān de nà zuò qiáo ma?

Can you see the bridge ahead?

那座桥离得太远，我看不见。

Nà zuò qiáo lí de tài yuǎn, wǒ kàn bú jiàn.

The bridge was too far away for me to see.

你看得见说明书上的字吗？

Nǐ kàn de jiàn shuōmíng shū shàng de zì ma?

Can you read the instructions?

我没戴眼镜，字也太小，我看不见。

Wǒ méi dài yǎnjìng, zì yě tài xiǎo, wǒ kàn bú jiàn.

I don't wear glasses, and the words are too small for me to see.

你看见那辆汽车吗？

Nǐ kànjiàn nà liàng qìchē ma?

Do you see that car?

雾太大，我看不见。

Wù tài dà, wǒ kàn bú jiàn.

The fog was too thick and I couldn't see.