Breakdown of Я не рассчитывал на то, что климат такой непривычный.
не
not
я
I
на
on, at / by (transport) / to (a place) / to (in answer to)
что
that (conjunction)
Questions & Answers about Я не рассчитывал на то, что климат такой непривычный.
Why do we need на то before что in this sentence?
The verb рассчитывать (to count on or rely on) requires the preposition на plus the accusative case. When you want to connect it to a whole clause starting with что, you cannot attach на directly to что. Instead, you use the dummy pronoun то to absorb the preposition and the case, giving us на то, что (literally 'on that, that').
Why is то in its basic form here, rather than том or тому like in other sentences?
The form of то is strictly dictated by what the main verb requires. Because рассчитывать на demands the accusative case, we use the accusative form of the pronoun то, which is just то. If the verb required the prepositional case, like говорить о (to talk about), it would change to о том, что.
Could I use the perfective verb рассчитал instead of рассчитывал?
Not for this meaning. The imperfective рассчитывать на means 'to count on' or 'to expect,' describing a continuous state of mind. The perfective verb рассчитать is mostly used for literal mathematical calculations, like calculating a budget, a dose, or a trajectory.
Why is 'so unfamiliar' translated using такой instead of так?