Ze vroegen ons om het document te ondertekenen.

From Lesson 198:Reported commands·Dutch

Questions & Answers about Ze vroegen ons om het document te ondertekenen.

How do we form a reported request like "asked us to sign" in this sentence?
To report a command or request, we use the verb vragen (to ask) followed by the person being asked (in this case, ons). Then, we use an om ... te + infinitive structure for the action. The word om starts the phrase, and te goes right before the infinitive verb at the very end of the sentence.
Why do we use "om ... te" here instead of "dat" (that)?
We use dat when reporting a full statement that has its own subject and conjugated verb (for example: Ze zeiden dat we het moesten ondertekenen - They said that we had to sign it). Because a request translates to a "to do something" phrase without a new subject, we use the om ... te + infinitive construction instead.
Wait, isn't "ondertekenen" a compound verb? Why isn't the "te" placed in the middle, like "onder te tekenen"?
Good catch! While many Dutch verbs are separable (like uitnodigen, which becomes uit te nodigen), ondertekenen is an inseparable verb. The prefix onder- stays firmly glued to tekenen. Because it never separates, the te just goes in front of the entire word: te ondertekenen.
Could we leave the word "om" out of this sentence?
Yes, grammatically you can often drop om before a te + infinitive phrase, leaving just: Ze vroegen ons het document te ondertekenen. However, including om is extremely common—especially in spoken Dutch—because it makes the sentence flow better and clearly signals what the requested action is.

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