估计

Wǒ gūjì tā dàyuē sānshí suì.

I estimate he is about thirty years old.

In this sentence, '估计' is used directly before the object '他' and indicates the action of making an estimation about someone's age.

Gūjì xiàyǔ, wǒmen yào dài sǎn.

It's predicted to rain, we need to bring umbrellas.

The word '估计' is used here to express a prediction or forecast about the weather.

Nǐ gūjì tā huì lái ma?

Do you think he will come?

In this question, '估计' refers to the action of making a guess or estimate about a future event.

Gūjì zhège xiàngmù xūyào liǎng nián wánchéng.

This project is estimated to take two years to complete.

Here, '估计' is used to express an estimation about the duration required to complete a project.

Gūjì míngtiān huì nuǎnhé yīxiē.

It is expected to be warmer tomorrow.

In this phrase '估计' is used to express a prediction or expectation about tomorrow's weather.

Wǒ gūjì tā bù tóngyì.

I guess he disagrees.

The word '估计' is used here to express a personal judgement or assumption about someone's opinion.

Gūjì tā xiànzài zài jiā.

He is probably at home now.

In this sentence, '估计' is used to express a probability about someone's current location.

Wǒmen gūjì tā huì yíngdé bǐsài.

We estimate that he will win the match.

This sentence uses '估计' to express an estimation or prediction about the outcome of an event.

Wǒ gūjì tā zài děng nǐ.

I guess she is waiting for you.

In this sentence, '估计' shows an assumption or guess about someone's current activity.

Wǒmen gūjì zhèlǐ yǒu wǔqiān rén.

We estimate that there are five thousand people here.

This sentence uses '估计' to express an estimation or guess about the number of people in a certain place.