Question 1

Why does espérer que trigger the indicative sais here? Doesn't hoping express a desire, which normally requires the subjunctive?

Accepted Answer

It is a major exception! While verbs of wishing and wanting generally take the subjunctive, espérer que in the affirmative expresses a strong expectation and takes the indicative. You only use the subjunctive with espérer if the statement is negative (Je n'espère pas que...) or inverted as a question (Espères-tu que...?).

Question 2

Why do we use sais instead of connais for "know" in this sentence?

Accepted Answer

When "knowing" means having the skill or knowledge of how to do an action, you must use savoir plus an infinitive (here, savoir sceller). Connaître is only used with nouns to mean you are familiar with a person, place, or thing, and can never be followed by a verb.

Question 3

The English translation says "know how to seal". Why is there no French word for "how" in this sentence?

Accepted Answer

In French, the verb savoir connects directly to the following infinitive verb without any preposition or joining word. The "how to" concept is simply built into the meaning of savoir when it is followed by an action.

Question 4

Could I use the future tense here and say J'espère que tu sauras sceller la porte?

Accepted Answer

Absolutely. In fact, espérer que is frequently followed by the future tense in French when referring to an upcoming event, even if English sticks to the present tense ("I hope you will know..."). Here, the present tense tu sais just emphasizes that the person possesses this skill right now.

J'espère que tu sais sceller la porte.

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