взема да

1. Ще взема да: a spur-of-the-moment decision. With the future it sounds casual, as if the idea just came to you: Ще взема да му се обадя. (I think I'll just give him a call.) The verb after да is usually perfective, as in свършен вид след да.

2. Взе да: a sudden start. In the aorist with да and an imperfective verb, it often means "started to": Детето взе да плаче. (The child started crying.) Взе да се стъмва. (It began to get dark.)

3. Взе, че: something unexpected happened. Both verbs take the same tense and person, joined by че: Взе, че си тръгна. (He just up and left.) Колата взе, че се развали. (The car went and broke down.) It is usually written with a comma before че. In a lively story both verbs can be in the historical present: Взема, че си тръгва.

4. Вземи, че: an impatient suggestion. Two imperatives joined by че push someone to finally act: Вземи, че му кажи истината! (Why don't you just tell him the truth!)

5. Worried "what if". With ако or ами ако it pictures an unwelcome surprise: Ами ако вземе да вали? (What if it suddenly starts raining?)

6. Style. All of these are colloquial. The imperfective взимам / вземам appears in the same patterns. In neutral writing, leave взема out or use започна да.