* Mtoto anaanguka (m-to-to a-na-an-gu-ka)
Let's break it down:
* Mtoto - child
* Anaanguka - is falling (present continuous tense)
This phrase accurately conveys that the child is in the process of falling.
You can also say:
* Mtoto anaanguka chini (m-to-to a-na-an-gu-ka chi-ni) - "The child is falling down."
* Mtoto ameanguka (m-to-to a-me-an-gu-ka) - "The child has fallen." (past tense)