沒有 Has Two Meanings

沒有 (méi yǒu) basically means don't have or not having ... (something)

For example:

1. 我沒有錢 wǒ méi yǒu qián = I don't have money

2. 他沒有房子 tā méi yǒu fáng zi = He has no house (He doesn't have house)

3. 他們沒有筆記型電腦 tā men méi yǒu bǐ jì xíng diàn nǎo = They have no laptop (They don't have laptop)

But sometimes 沒有 (méi yǒu) related to past time action, for instance when teacher in school asked whether you have reviewed the previous lesson at home? and your answer is no, I didn't, your answer would be:

我沒有複習 wǒ méi yǒu fù xí = I didn't review (I didn't study)

Explications

So, here are the form to indicate those two different meaning of 沒有 (méi yǒu)

1) The first one is to indicates not having or doesn't / don't have:

Subject + 沒有 + object or noun or time

For example:

1. 我沒有英文書 wǒ méi yǒu yīng wén shū = I don't have English book.

2. 我爸爸(他)沒有工作 wǒ bà ba (tā) méi yǒu gōng zuò = My father (he) doesn't have a job.

3. 他們沒有時間 tā men méi yǒu shí jiān = They don't have (free) time.

2) The second one is to indicates past time action has not accomplished:

Subject + 沒有 + verb

For example:

1. 我沒有吃早餐 wǒ méi yǒu chī zǎo cān = I didn't eat breakfast.

2. 他沒有做功課 tā méi yǒu zuò gōng kè = He didn't do his homework.

3. 他們沒有上學 tā men méi yǒu shàng xué = they didn't go to school.

So, now tell us if you can distinguish the different meaning

between the first and second explication of 沒有 above:

1. 姊姊沒有男朋友 jiě jie méi yǒu nán péng you

2. 我沒有吃藥 wǒ méi yǒu chī yào

3. 他們沒有說話 tā men méi yǒu shuō huà

4. 爸爸沒有汽車 bà ba méi yǒu qì chē

5. 我們沒有看到你 wǒ men méi yǒu kàn dào nǐ