Cihazın laboratuvarda test edilmesi gerekiyor.

to be necessary

Breakdown of Cihazın laboratuvarda test edilmesi gerekiyor.

• cihaz: the device
• laboratuvar: the laboratory
• test edilmek: to be tested

Questions & Answers about Cihazın laboratuvarda test edilmesi gerekiyor.

Why is Cihazın in the genitive case instead of just Cihaz?

In Turkish, when you turn a verb into a noun with -ma/-me, whatever would normally be its direct object (or subject, in a passive construction) becomes a genitive “possessor” of that noun clause. Here:
• Cihaz → Cihazın (“of the device”)
• Cihazın test edilmesi → “the testing of the device”
So Cihazın shows that the device is what’s being tested.

Why don’t we say Test etmek gerekiyor instead of test edilmesi gerekiyor?

The verb gerekmek is impersonal and requires a noun or noun clause as its subject—it cannot take a bare infinitive. So you can’t say “Test etmek gerekiyor.” You must nominalize “to be tested” into test edilmesi (“its being tested”) and then state the necessity:
• test edilmesi gerekiyor = “its being tested is necessary.”

How is the passive edilmesi formed from test etmek?

1. Start with the verb root et- (from test etmek, “to test”).
2. Add the passive marker -il-, giving edil- (note the t→d assimilation).
3. Attach the verbal noun suffix -me, producing edilme-.
4. Finally, add the 3rd-person singular possessive -si, yielding edilmesi.
   Combined with test, you get test edilmesi: “its being tested.”