Breakdown of Quiero que asumas la responsabilidad del proyecto.
del
from the / of the
querer
to want
el proyecto
the project
que
that / than
Questions & Answers about Quiero que asumas la responsabilidad del proyecto.
Why is it asumas instead of asumes?
Because this sentence uses the phrase Quiero que (I want that). When you express a desire for someone else to do something, Spanish requires a special verb form called the subjunctive. Since asumir is a regular -ir verb, its informal 'you' form in the present subjunctive swaps the usual indicative ending for an -as, making it asumas.
In English we say 'responsibility for', so why does the Spanish sentence use del (of the) instead of por el?
In Spanish, when you talk about having or taking responsibility for something, you use the preposition de (of) rather than por (for). Since proyecto is masculine, de combines with the word el to make the mandatory contraction del.
Does asumir mean 'to assume' like 'to guess'?
How do we know I want you to assume responsibility, since the word tú isn't in the sentence?