See the attached document and study it, it contains things that often trip people up.

Question 1

el lunes

Answer 1

On Monday

Question 2

los lunes

Answer 2

On Mondays (every Monday)

Question 3

antes de + infinitive

Answer 3

before doing

Question 4

Example of antes de+ infintive

Answer 4

antes de jugar al fútbol, como la cena – before playing football I eat dinner

Question 5

después de + infinitive

Answer 5

after doing

Question 6

example despues

Answer 6

después de terminar mis deberes – after finishing my homework

Question 7

acabar de + infinitive

Answer 7

to have just done

Question 8

example of acabar

Answer 8

acaban de construir un hotel – They have just built a new hotel

Question 9

llevar + gerund (ing)

Answer 9

to have built up an amount of time doing something

Question 10

example of llevar

Answer 10

llevo 5 años estudiando el español – I have studied Spanish for 5 years

Question 11

hace + time

Answer 11

….ago

Question 12

example of hace

Answer 12

Hace una semana fui a Francia – I went to France a week ago

Question 13

desde hace + present/desde hacía + pluperfect – since

Answer 13

since

Question 14

examples of desde hace+present/hace hacía+ pluperfect

Answer 14

Estudio español desde hace 5 años – I have studied Spanish for 5 years
Había estudiado español desde hacía 5 años – I had studied Spanish for 5 years