Conjugating “er” verbs

Question 1

When you have a verb with an “e” before the “er” in the infinitive form (acheter), how do you conjugate - what changes?

Answer 1

The “e” often changes to “è” except with “nous” and “vous”

Question 2

How do you conjugate verbs with “é” before the “er”, like “répéter”

Answer 2

The second é changes to an “è”, except for “nous” and “vous”

Je répète, but for «nous» and «vous»,

Nous répétions

Question 3

What’s the pattern for verbs like envoyer (to send)?

Answer 3

You have to change the “y” to an “i”, except for “nous”and “vous”

J’envoie, but nous envoyons

Question 4

What’s different about conjugating “essayer” (to try)?

Answer 4

You can switch to the “y”
(j’ essaie and j’essaye) for I, you (sing/ informal), hé and they. But not with nous and vous, where it’s essayons and essayez

Question 5

With “er” verbs that have an “é”, like “protéger” (to protect”, what has to change, except for with “nous” and “vous”?

Answer 5

The “é” right before the conjugated ending changes to an “è”.

“Ils protègent”