Я удивляюсь, как быстро летит время.

Breakdown of Я удивляюсь, как быстро летит время.

я
I
как
how
быстро
quickly
лететь
to fly
время
the time
удивляться
to be surprised

Questions & Answers about Я удивляюсь, как быстро летит время.

What does удивляюсь mean and how is it conjugated?

Удивляюсь is the 1st person singular present tense of the reflexive verb удивляться, meaning “to be surprised” or “to wonder.” Its present-tense conjugation is: я удивляюсь, ты удивляешься, он/она удивляется, мы удивляемся, вы удивляетесь, они удивляются.

Why is there a comma before как?
The phrase как быстро летит время is a subordinate (object) clause that explains what I’m surprised about. In Russian, subordinate clauses are set off from the main clause by a comma.
What is the role of как here?
Как in this sentence is a subordinating conjunction meaning “how.” It introduces the clause that describes the manner in which time flies.
Why is летит in the imperfective aspect rather than perfective?
The imperfective летит describes an ongoing or habitual process (“time flies”). A perfective form like пролетело would frame it as a single completed event (“time has flown by”), changing the nuance.
Why is время in the nominative case?
Within the subordinate clause как быстро летит время, время is the subject performing the action “flies,” and subjects in Russian appear in the nominative case.
Can I add тому before как?
Yes. You can say Я удивляюсь тому, как быстро летит время. Here тому (dative of то) explicitly marks the clause as the object of удивляюсь, but omitting it is perfectly natural in modern colloquial Russian.
Could I use что instead of как?
You could say Я удивляюсь, что время так быстро летит, which means “I’m surprised that time flies so fast.” Using что introduces the fact itself, whereas как focuses on the manner (“how fast”).
Why is the adverb быстро placed before летит?
In Russian, adverbs of manner typically precede the verb they modify. Placing быстро after летит isn’t ungrammatical, but it sounds more emphatic or poetic.
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