throw oneself in something —(also: throw oneself into something)
1. jump suddenly into the lake, river, etc.:
- I won’t be throwing myself in the canal over the collapsed deal.
2. engage vigorously in an activity:
- So he slowly began to pull away, throwing himself in his work in the hopes of making the inevitable separation easier.
throw oneself on something—
1. (also: throw oneself down on something ) lie down suddenly at full length on the bed, etc.:
- Miss Flora had thrown herself on a carpet by the bedside.
2. rely completely on smth. for help, protection, etc.:
- They are obliged to throw themselves on the parish for aid.
throw oneself to something — = throw oneself on something 1:
- He threw himself to the ground as the shells flew overhead.