Hi guys!
Next class we are working with modal verbs in past tense to express probability/ give a hypothesis, but before doing it I want you to practise with some exercises.
In case you have any questions please let me know!
Here are some exercises that are compulsory to do.
http://www.englishpage.com/modals/interactivemodal1.htm
http://www.englishpage.com/modals/interactivemodal3.htm
http://www.englishpage.com/modals/interactivemodal8.htm
Here is the main page of the previous links where you can find grammar explanation.
http://www.englishpage.com/modals/can.html
For example: if you aren't sure how to use "CAN" click on the link "CAN" an over there you will find all its functions: ability, suggestions, opportunity, permission, request, possibility.
If you want to check the topic possibility to be ready for the classs. Check this link:
http://esl.about.com/library/grammar/blmodalprob.htm