Question

В каких случаях ставится окончание ier

Answer 1

Может -er?
Добавляется к глаголу, чтобы исполнителя действия, например:
teach - teacher (учить - учитель)
Еще используется в сравнительной форме
happy - happier (счастливый - счастливее(в этом случае 'y' сменяется 'i')
Ищи правила в инете в общем

Answer 2

Cases for Adding the Ending "ier"

In French, the ending "ier" is added to the root of a verb in certain cases. Here are the main cases when the ending "ier" is added:

1. Verbs Ending in "-ier" or "-yer": When a verb ends in "-ier" or "-yer" in its infinitive form, the ending remains unchanged in the present participle form. For example, "étudier" (to study) becomes "étudiant" (studying) and "envoyer" (to send) becomes "envoyant" (sending).

2. Verbs Ending in "-e, -ier" or "-e, -yer": Some verbs ending in "-e, -ier" or "-e, -yer" in their infinitive form change the "-ie" to "-y" before adding the ending "-ant" in the present participle form. For example, "crier" (to shout) becomes "criant" (shouting) and "négocier" (to negotiate) becomes "négociant" (negotiating).

3. Verbs Ending in "-e, -ier" or "-e, -yer" (Exception): However, there are exceptions to the above rule. Some verbs ending in "-e, -ier" or "-e, -yer" in their infinitive form do not change the "-ie" to "-y" before adding the ending "-ant" in the present participle form. For example, "fier" (to be proud) becomes "fier" (being proud) and "prier" (to pray) becomes "priant" (praying).

Additional Information

It's important to note that the rules for forming the present participle in French can be complex due to irregular verbs and exceptions. However, the above cases cover the general patterns for adding the ending "ier" to verbs in the present participle form.

If you have specific verbs in mind or would like to explore more examples, feel free to ask for further details!