Is the sentence grammatically correct?
Yes — the sentence In summer, mosquitoes gather in cloud-like droves. is grammatically correct. The subject (mosquitoes) and the verb (gather) agree, the introductory phrase (In summer,) is followed by a comma, and the whole sentence makes sense.
What the parts mean (step by step):
- In summer, — tells when it happens.
- mosquitoes — the subject (who does the action).
- gather — the verb (what they do).
- in cloud-like droves — describes how many and what they look like. In droves means "in large numbers," and cloud-like compares them to clouds.
One small note: The phrase "cloud-like droves" works, but it mixes two images (clouds and droves). For clearer or more natural wording, you can pick one image at a time.
Simple alternative sentences an 8-year-old can use:
- In summer, mosquitoes gather in big swarms.
- In summer, mosquitoes come out in droves.
- In summer, mosquitoes gather like clouds.
All of the above are correct. Pick the one that sounds best to you!