chèn gōngyì huódòng méi jiéshù, bǎ shēnghuóyòngpǐn dài dào juānzèngdiǎn.

趁 means to take advantage of a certain time or opportunity. At the start of a sentence, it often introduces the idea while there is still time or before it is too late.

So:

趁公益活动没结束，...
= While the charity event hasn't ended yet, ...
= Before the charity event is over, ...

It sets up the timing for the action in the second part of the sentence.

A very common pattern is:

趁 + situation/time, + do something

For example:

• 趁天还没黑，赶快回家。
  Go home quickly before it gets dark.

In Mandarin, 没 is commonly used to negate completed events, changes of state, or things that have not happened yet.
结束 means to end / to be over, which is treated as an event or change.

So:

• 没结束 = has not ended
• 不结束 = does not end / will not end (less natural here)

In this sentence, the meaning is that the event hasn't ended yet, so 没 is the natural choice.

This part is a time/opportunity phrase that means:

趁 + [something has not happened yet]

More specifically:

• 公益活动 = charity/public welfare event
• 没结束 = has not ended

So the whole phrase means:

while the charity event is not over yet
or
before the charity event ends

It functions like a background condition for the main action.

把 is used to bring the object forward and show what happens to it as a result of the action.

Normal order:

• 带生活用品到捐赠点

把 sentence:

• 把生活用品带到捐赠点

Both are possible, but the 把 version emphasizes the handling of the object 生活用品 and the result that it ends up at the donation site.

A common pattern is:

把 + object + verb + result/location

Here:

• 把
  • 生活用品
    • 带到
      • 捐赠点

So the sentence focuses on taking the household items to the donation point.

带到 is 带 + 到:

• 带 = to bring / take along
• 到 = to arrive at / to a place

Together, 带到 means bring/take something to a place.

So:

把生活用品带到捐赠点
= bring the household items to the donation site

The 到 shows the destination and gives the verb a clear result.

The subject is omitted because this sentence is most naturally read as an instruction, suggestion, or call to action.

In English, we often do the same thing:

• Bring the items to the donation point before the event ends.

The hidden subject is basically you.

Mandarin often leaves out subjects when they are obvious from context, especially in commands, notices, and advice.

Yes, it sounds like an instruction, appeal, or public notice rather than a neutral description.

It does not contain an explicit command marker like 请, but the structure strongly suggests:

• Do this while there is still time

If you wanted to make it more polite or explicit, you could say:

• 趁公益活动没结束，请把生活用品带到捐赠点。

That would mean:

• While the charity event is still ongoing, please bring household items to the donation point.

公益活动 means a public welfare activity/event, often something done for social good.

Breakdown:

• 公益 = public welfare / social good / charitable cause
• 活动 = activity / event

So 公益活动 can refer to things like:

• charity drives
• donation campaigns
• volunteer events
• community aid events

In this sentence, it is probably some kind of donation-related charity event.

生活用品 means daily necessities, household items, or everyday-use goods.

Examples include:

• soap
• toothpaste
• towels
• clothes
• blankets
• basic household supplies

It is similar to 日用品, which also means daily-use items.

A rough difference:

• 生活用品 is a bit broader and can sound slightly more general
• 日用品 often strongly emphasizes everyday consumer items

In many contexts, they overlap.

捐赠点 means donation point/site — a place where people bring things to donate.

Breakdown:

• 捐赠 = to donate
• 点 = point / spot / site

So this is the location where donated goods are collected.

Depending on context, English translations could be:

• donation point
• donation site
• drop-off point
• collection point

Mandarin word order here follows the 把-construction:

把 + object + verb + destination/result

So:

• 把生活用品带到捐赠点

This means:

• take the household items and cause them to end up at the donation point

The object 生活用品 must come right after 把.

If you say 带到捐赠点生活用品, the order is incorrect because 生活用品 is the thing being moved, so it needs to appear before the verb result phrase in this structure.

Because the sentence is talking about a situation that is not yet completed:

• 没结束 = has not ended

Adding 了 here would change the feeling and is not needed in this structure.

Compare:

• 活动结束了。
  The event has ended.

• 活动还没结束。
  The event has not ended yet.

In your sentence, the meaning is clearly the second one: the event is still ongoing.

Yes. Both are good English translations.

They capture slightly different angles of the same Chinese idea:

• while the event hasn't ended yet focuses on the current unfinished state
• before the event ends focuses on the deadline or opportunity window

That is exactly the kind of nuance 趁 often has: do something while the chance still exists.

The sentence can be understood as:

趁 + time/opportunity clause, + 把 + object + verb + destination

So here:

• 趁公益活动没结束 = while the charity event is still ongoing
• 把生活用品带到捐赠点 = bring household items to the donation point

Overall pattern:

While there is still time, do X with object Y.

This is a very common structure in notices, advertisements, and public campaigns.