I don't understand vs Now i don't know

Quand utiliser chacun en anglais, avec le sens, le registre et des exemples.

I don't understand

Top 2000 (courant)

Now i don't know

Top 3000 (courant)
Le plus courant: I don't understand
 I don't understandNow i don't know
Prononciation🇬🇧 //aɪ dəʊnt ˌʌndəˈstænd//🇺🇸 //aɪ doʊnt ˌʌndərˈstænd//🇬🇧 //naʊ aɪ dəʊnt nəʊ//🇺🇸 //naʊ aɪ doʊnt noʊ//
SensJe ne saisis pas.I don't get it.I am confused or unsure right now.
ExempleWhen the teacher explained the math problem, I said, 'I don't understand.'I planned everything, but now I don't know what to do.
RegistreNeutreNeutre
FréquenceTop 2000 (courant)Top 3000 (courant)
Collocationsdon't understand anything, don't understand why, don't understand the instructionsdon't know what, don't know how, don't know why, now I feel confused
Antonymesunderstand, comprehendNow I know, I understand now
Erreurs fréquentesSaying 'I not understand' instead of 'I don't understand'., Using 'I no understand' which is incorrect in English., Confusing it with 'I understand not', which sounds overly formal.Using in a very formal situation, Confusing with 'I don't know now', which implies a change in knowledge, Omitting the subject when speaking
Notes d'usageTu peux utiliser cette phrase quand tu as besoin de plus d'explications. Ça passe bien dans la plupart des situations, mais évite-la si c'est très formel.Use this phrase when you need clarification. It's appropriate in most situations but avoid it in very formal contexts.Used when you are expressing confusion or lack of information. Common in informal conversations but appropriate in neutral contexts as well.

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I don't understand
Now i don't know

Questions fréquentes : I don't understand vs Now i don't know

Quelle est la différence entre I don't understand et Now i don't know ?

I don't understand: I don't get it. Now i don't know: I am confused or unsure right now.

Lequel est le plus courant : I don't understand et Now i don't know ?

I don't understand est le plus courant dans l'anglais de tous les jours.

Peux-tu montrer un exemple de chacun ?

I don't understand: When the teacher explained the math problem, I said, 'I don't understand.' Now i don't know: I planned everything, but now I don't know what to do.

Puis-je utiliser I don't understand et Now i don't know de façon interchangeable ?

Pas toujours. I don't understand et Now i don't know sont proches et se recoupent parfois, mais elles diffèrent par le registre, la fréquence et l'usage, donc remplacer l'une par l'autre peut changer le sens ou le ton. Regarde les différences ci-dessus avant de substituer.