wǒ xūyào fángshàishuāng hé fángchóngpēnwù.

A natural pronunciation is:

Wǒ xūyào fángshàishuāng hé fángchóng pēnwù.

Tone by tone:

• 我 — wǒ (3rd tone)
• 需要 — xūyào (1st + 4th)
• 防晒霜 — fángshàishuāng (2nd + 4th + 1st)
• 和 — hé (2nd)
• 防虫喷雾 — fángchóngpēnwù (2nd + 2nd + 1st + 4th)

A few pronunciation tips:

• xū sounds like shee said with rounded lips.
• shài in 防晒 is a strong 4th tone.
• chóng uses the ch sound, not English ch exactly, but a retroflex Mandarin sound.
• wù ends firmly with a 4th tone.

Mandarin rhythm is more even than English. Don’t heavily stress one word the way you might in English.

需要 means to need or to require.

In this sentence, it works as a regular verb:

• 我需要防晒霜。 — I need sunscreen.
• 我需要防虫喷雾。 — I need insect repellent spray.

Basic pattern:

subject + 需要 + thing/action

Examples:

• 我需要水。 — I need water.
• 我需要休息。 — I need rest / I need to rest.

So in your sentence, 需要 is followed by two nouns: 防晒霜 and 防虫喷雾.

Yes, 我需要... is natural and correct.

But Mandarin has a few ways to express need, and they are not always identical:

• 我需要... — I need...
  • neutral and standard
• 我要... — I want...
  • sometimes used where English says I need, but it can sound more like desire or intention
• 我得... / 我必须... — I have to...
  • stronger, more about obligation

So if you truly mean I need sunscreen and bug spray, 我需要... is a very good choice.

Mandarin does not use articles like English a/an/the.

So a noun can appear by itself:

• 我需要防晒霜。
• literally: I need sunscreen.

Depending on context, this could mean:

• I need sunscreen
• I need some sunscreen
• I need the sunscreen

The exact meaning comes from context.

If you want to be more specific, you can add words such as:

• 一些防晒霜 — some sunscreen
• 那个防晒霜 — that sunscreen
• 一瓶防虫喷雾 — a bottle of insect repellent spray

和 means and, and here it joins two nouns:

• 防晒霜 和 防虫喷雾
• sunscreen and insect repellent spray

That is a very standard use.

A few helpful notes:

• 和 is commonly used to connect nouns.
• It is very natural in simple lists like this.
• In speech, learners also often hear 跟 used similarly:
  • 我需要防晒霜跟防虫喷雾。

For this sentence, 和 is perfectly normal and probably the best basic choice.

In beginner Mandarin, it is safest to think of 和 as mainly connecting nouns or noun phrases.

Examples:

• 咖啡和茶 — coffee and tea
• 爸爸和妈妈 — dad and mom
• 防晒霜和防虫喷雾 — sunscreen and insect repellent spray

When English uses and to connect whole clauses or verb phrases, Mandarin often uses other structures instead of just dropping in 和.

So in your sentence, 和 works nicely because both things being connected are nouns.

Yes. 防晒霜 is a compound word:

• 防 — prevent, protect against
• 晒 — sun exposure / be dried by the sun / sun-tan
• 霜 — cream, frost; in products, often cream/lotion

So 防晒霜 literally means something like:

sun-protection cream

That is why it means sunscreen or sunblock.

Yes. 防虫喷雾 is also built from meaningful parts:

• 防 — prevent, guard against
• 虫 — insect/bug
• 喷雾 — spray, mist, aerosol

So the word literally means:

bug-preventing spray

In natural English, that is insect repellent spray or bug spray.

No. It is understandable, but there are other common ways to say similar things.

For example:

• 驱虫喷雾 — insect-repelling spray
• 防蚊液 — mosquito-repellent liquid
• 驱蚊喷雾 — mosquito-repellent spray

The best choice depends on what you specifically mean:

• general insect repellent
• mosquito repellent
• spray vs lotion vs liquid

So 防虫喷雾 is a reasonable learner-friendly expression, but in real life you may also see other product names.

No, not in this sentence.

When you are speaking generally about needing something, the bare noun is fine:

• 我需要防晒霜。
• 我需要防虫喷雾。

You use a measure word when you want to count or specify the item:

• 我需要一瓶防晒霜。 — I need a bottle of sunscreen.
• 我需要一瓶防虫喷雾。 — I need a bottle of insect repellent spray.

So your original sentence is completely natural without measure words.

The pattern is:

Subject + Verb + Noun + 和 + Noun

In your sentence:

• 我 — subject
• 需要 — verb
• 防晒霜 — first noun
• 和 — and
• 防虫喷雾 — second noun

So the structure is very straightforward:

I + need + sunscreen + and + insect repellent spray

This is one reason the sentence is beginner-friendly.

Sometimes yes, but it depends on context.

Mandarin often drops subjects when they are already clear:

• 需要防晒霜和防虫喷雾。

This can work in context, for example on a packing list or while speaking with someone who already knows you are talking about yourself.

But if you are making a normal full sentence for practice, keeping 我 is best:

• 我需要防晒霜和防虫喷雾。

That sounds complete and clear.

Very simply:

Negative

Put 不 before 需要:

• 我不需要防晒霜和防虫喷雾。
• I don’t need sunscreen and insect repellent spray.

Yes-no question

Add 吗 at the end:

• 你需要防晒霜和防虫喷雾吗？
• Do you need sunscreen and insect repellent spray?

A-not-A question

Repeat the verb pattern:

• 你需不需要防晒霜和防虫喷雾？
• Do you need sunscreen and insect repellent spray?

Both question forms are common.

Not grammatically. You could switch them:

• 我需要防虫喷雾和防晒霜。

That is still correct.

The original order may sound a bit more natural if the speaker is thinking about sun protection first and bug protection second, but there is no grammar rule forcing that order.

So the order mainly reflects emphasis or preference, not correctness.