Learn French: Dès que la nuit tombera, j'utiliserai le télescope. - As soon as night falls, I will use the telescope.

In English, we use the present tense after time phrases like "as soon as" or "when". But in French, if the action is going to happen in the future, you must use the future tense! You will consistently see this rule after dès que (as soon as), quand (when), and lorsque (when).

Are dès que and aussitôt que the same thing?

Yes! Both mean "as soon as" and can be used interchangeably in a sentence like this. Dès que is just a bit shorter and very common in everyday speech.

Is the phrase la nuit tombe a literal translation of "night falls"?

Yes, French and English share this exact same poetic expression! You will also use tomber (to fall) for other states, just like in English, such as tomber malade (to fall ill) or tomber amoureux (to fall in love).

How do we form the future tense for j'utiliserai?

For regular -er verbs, you take the entire infinitive form of the verb (utiliser) and simply add the future endings. For the je form, the ending is -ai, which gives us utiliserai.