Grammar (Verb Tenses)

Question 1

sequences of tenses with si

Answer 1

si+present -> futur simple (or present)
si+imparfait->conditionnel
si+past anterior-> conditionnel passé

Question 2

subjonctif form (regular verbs)

Answer 2

root of third person plural of the indicative + ending: -e,-es,-e,-ions,-iez,-ent

Question 3

conditionnel form

Answer 3

futur stem + imparfait endings

Question 4

conditionnel usage

Answer 4

to express a desire/wish,
a future action in relation to the past, a hypothesis, for politeness, something that depends on a condition, a future possibility

would …, except pouvoir->could, might(?)/devoir->should, might(?)