tiānqì gǎibiàn le wǒmen de jìhuà.

possessive particle

Breakdown of tiānqì gǎibiàn le wǒmen de jìhuà.

• 我们wǒmen: we
• 了le: perfective particle

Questions & Answers about tiānqì gǎibiàn le wǒmen de jìhuà.

What is the basic word order of this sentence?

The sentence follows the normal Chinese pattern:

Subject + Verb + 了 + Object

So here:

• 天气 = the weather
• 改变了 = changed
• 我们的计划 = our plan / our plans

So literally, it is:

The weather changed our plan(s).

Chinese usually keeps this straightforward SVO order, much like English.

Why is 了 (le) used after 改变?

Here 了 marks the action as completed or as a new fact/result.

So:

• 改变 = change / to change
• 改变了 = changed / has changed

In this sentence, 了 tells you that the weather’s effect on the plan has already happened.

Without 了, the sentence would sound less like a completed event and more like a general statement, a possibility, or something depending on context.

Why is 的 (de) used in 我们的计划?

的 links a possessor to a noun.

So:

• 我们 = we / us
• 我们的 = our
• 我们的计划 = our plan / our plans

In Chinese, pronouns usually need 的 before a noun when showing possession:

• 我的书 = my book
• 你的老师 = your teacher
• 我们的计划 = our plan(s)

So 我们计划 would normally not work here if you mean our plan.