Questions & Answers about Kutu iki litre su kadar ağır.
How do we use kadar to say "as heavy as" in this sentence?
Why isn't there a word for "of" in iki litre su (two liters of water)?
In Turkish, when you use a unit of measurement, you don't use a connecting word like "of". You just put the number, the unit, and the noun right next to each other: iki (two) + litre (liter) + su (water).
Why is kutu at the very beginning of the sentence?
Where is the word for "is" in this sentence?
There isn't a specific word or suffix for "is" here. In Turkish, "is" is often just implied in the present tense for third-person subjects like kutu. You could add the "to be" suffix -dır to the end (ağırdır) to sound more formal or certain, but it is completely natural to leave it off in everyday speech.