Present/Past Participle after “be”
1.Jacob was watching movie in the cinema
2.She will be working at the office
3.Lunch is served from 14:00 to 15:00
4.The class is taught every other semester
5.Tom is bringing some drinks to the party
6.The sick child was taken to see a doctor
7.The children are swimming in the backyard pool
8.The teacher is preparing a difficult exam for the students
9.Dinner is served from 8:00 to 10:00
10.Aaron has finished his study at a university
11.She might have got an accident when tiding her motorbike so fast
12.Isabella was watching TV when the earthquake happened
13.Natasha may be helping her mother in the kitchen now
14.The pie was cut into six equal pieces
15.She is smelling blooming flowers
Base Form Verbs after Modals
1.this course will satisfy the graduation requirement
2.you must not walk on the grass
3.they had to sell their house
4.we thought he might sell the house
5.i think the bill could be expensive
6.you must keeping the item
7.everyone must leave the room immediately
8.i can drive very well
9.you must be joking
10.the flood will come to Bandung tonight
11.i could sit on the beach for hours
12.she will ask you may difficult questions
13.you can look at the book, but you cannot borror it
14.he may lie to you because he is not very truthful
15.he knew that he would forget the phone number
Sumber:
http://www.grammar.cl/english/modal-verbs.htm
http://www.toeflskill.com/2011/06/problems-with-modals-skill-18.html