When to use subjunctive

Question 1

When there is an element of uncertainty

Answer 1

je doute qu’il soit chez lui

Question 2

when emotion colours the action of the verb following

Answer 2

je suis content qu’il vienne

Question 3

after expressions of necessity or obligation

Answer 3

il faut que

Question 4

after verbs of thinking, saying or knowing (in the negative)

Answer 4

je ne crois pas que

Question 5

after certain conjunctions

Answer 5

bien que