Time 4

是⋯⋯的 (shì... de)
In English, we might say It was yesterday that she left to add emphasis to yesterday. In Chinese, you can do this by saying 是 (shì, to be) after the person and then adding 的 (de, show possession) to the very end. You normally only do this when talking about the past.​
他们是去年春天去伦敦的。​
(Tāmen shì qùnián chūntiān qù lúndūn de.​) It was spring last year that they went to London.​
我们是三天前到的。​
(Wǒmen shì sān tiān qián dào de.​) It was three days ago that we arrived.​
If you’re asking a question, just add 吗 (ma) after 的 (de)!​
你是上个月走的吗?​
(Nǐ shì shàng gè yuè zǒu de ma?​) Was it last month that you left? ​
Time
The day before yesterday and the day after tomorrow in Chinese are just 前天 (qiántiān) and 后天 (hòutiān). Easy peasy!​
前天是我的生日。​
(Qiántiān shì wǒ de shēngrì.​) The day before yesterday was my birthday.​
我的猫前天喝了我的咖啡。​
(Wǒ de māo qiántiān hēle wǒ de kāfēi.​) My cat drank my coffee the day before yesterday. ​
后天你会做什么?​
(Hòutiān nǐ huì zuò shénme?​) What will you be doing the day after tomorrow?​
Seasons
If you want to talk about seasons, don’t forget to use 天 (tiān, day) after the season word!​
这个春天我们会有一个新的老师。
(Zhè ge chūntiān wǒmen huì yǒu yí ge xīn de lǎoshī.​) This spring we will have a new teacher.​
这里的夏天有多热?​
(Zhèlǐ de xiàtiān yǒu duō rè?​) How hot are the summers here?​
她去年秋天来了北京。​
(Tā qùnián qiūtiān lái le Běijīng.​) She came to Beijing last fall.​
你喜欢冬天吗?​
(Nǐ xǐhuān dōngtiān ma?​) Do you like winter?