Verb + -ing or to… — 1
enjoy / remember / begin — Same Form or Different Meaning? Verbe + -ing ou to… — 1
enjoy / remember / begin — Même Forme ou Sens Différent ?

I remember locking the door = I have a memory of having locked it (the locking happened first, then the remembering). I remembered to lock the door = I didn’t forget to lock it (the remembering happened first, then the locking).

I remember locking the door = j’ai le souvenir de l’avoir fermé à clé (l’action a eu lieu avant le souvenir). I remembered to lock the door = je n’ai pas oublié de fermer à clé (le souvenir vient avant l’action).

She stopped smoking = she no longer smokes (smoking was the activity that stopped). She stopped to smoke = she paused what she was doing in order to have a cigarette (here ‘to smoke’ is an infinitive of purpose, answering ‘why did she stop?’). Only the -ing form is a true verb complement of ‘stop’.

She stopped smoking = elle ne fume plus (fumer était l’activité interrompue). She stopped to smoke = elle s’est arrêtée pour fumer (ici ‘to smoke’ est un infinitif de but). Seul le -ing est un vrai complément de ‘stop’.

Yes, both forms are correct and mean the same: It began raining = It began to rain. However, when ‘begin’ or ‘start’ is itself in the -ing form (continuous), use the to-infinitive: ✓ It was beginning to rain. ✗ It was beginning raining.

Oui, les deux formes sont correctes et ont le même sens : It began raining = It began to rain. Cependant, quand ‘begin’ ou ‘start’ est lui-même au -ing, on utilise l’infinitif en to : ✓ It was beginning to rain. ✗ It was beginning raining.

Go on + -ing = continue the same activity: He went on talking for hours. Go on + to = move on to a new, different activity: After school she went on to study at university. The direction of the activity is the key: same vs new.

Go on + -ing = continuer la même activité : He went on talking for hours. Go on + to = passer à une nouvelle activité différente : After school she went on to study at university.