昨天

Zuótiān wǒ qùle túshūguǎn.

Yesterday I went to the library.

Here, we are using '昨天' at the beginning of the sentence to indicate the time of the action, followed by the subject, the verb and finally the destination.

Tā zuótiān shēngbìngle.

She was sick yesterday.

None

Wǒmen zuótiān hēle hěnduō jiǔ.

We drank a lot of alcohol yesterday.

This example again uses '昨天' to mark the time when the action was completed. It tells about the quantity of an action performed in the past.

Zuótiān tā méilái.

He didn't come yesterday.

Here, '昨天' is used to point out when the action (or lack of action) occurred. It's followed directly by the negative form of the action verb.

Zuótiān wǒ zàijiā kàn diànyǐng.

Yesterday, I watched a movie at home.

In this sentence, '昨天' is used at the beginning to signify when the action took place. It is followed by the place and the activities conducted.

Nǐ zuótiān zài nǎ'er?

Where were you yesterday?

'昨天' is used to ask about someone's whereabouts at a certain time in the past.

Zuótiān wǒ mǎile xīn de shǒujī.

Yesterday, I bought a new cell phone.

'昨天' is used to denote when the action took place, followed by what action was taken.

Zuótiān nǐ zuòle xiē shénme?

What did you do yesterday?

In this question, '昨天' is used to inquire about someone's previous day's activities.

Zuótiān tā gěile wǒ yīduàn xìnxī.

He gave me a piece of information yesterday.

Here, '昨天' is used to signify when an action took place. The verb '给' (give) is then used with the indirect and direct objects.

Zuótiān wǒ wàngle dài sǎn.

Yesterday, I forgot to bring an umbrella.

In this sentence, '昨天' is once again used to indicate when something happened. It's directly followed by the action and what was forgotten.