Learn Hardcore German: Ich lese die Bewertung im Internet. - I am reading the rating on the internet.

im is a contraction of in + dem. Since Internet is a neuter noun (das Internet) and in governs the dative, in dem Internet becomes im Internet.

Why is die Bewertung in the accusative case?

The verb lesen is transitive and takes a direct object. That object must be in the accusative. Here, die Bewertung is what you’re reading, so it appears in the accusative singular.

How do I know that Bewertung is feminine and needs die?

Every German noun has a fixed gender. Bewertung is classified as feminine, so its singular nominative and accusative article is die. You can confirm this in any good German dictionary.

Could we use the plural Bewertungen here? How would the sentence change?

Yes. In the plural, the accusative article remains die. You’d say:
Ich lese die Bewertungen im Internet.
That means you read reviews (in general) on the internet.

What’s the difference between Bewertung and Rezension?

Bewertung often refers to a user rating or brief evaluation (stars, points).
Rezension is usually a more detailed critique, like a professional review you’d find in a magazine or newspaper.

Why is im Internet placed at the end of the sentence?

German main‐clause word order is typically Subject – Verb – Objects – Adverbials. im Internet is an adverbial of place, so it naturally goes after the object.

Can I say Im Internet lese ich die Bewertung instead?

Yes. German allows you to front an adverbial for emphasis. By moving im Internet to the beginning, you emphasize the location:
Im Internet lese ich die Bewertung.

Can I omit the article die before Bewertung?

No. In German, most singular countable nouns need an article or determiner. You could say eine Bewertung (a review) or die Bewertung (the review), but not Ich lese Bewertung.