Guessing and making hypothesis

Read this link as an intro: http://esl.about.com/library/grammar/blmodalprob.htm

When we aren't 100% of something we want to say about a situation we guess or make hypothesis.

To express it, we use this 'Guessing pyramid':

M U S T ( 99% probable) +
C A N (85%)
M A Y (50%)
M I G H T
COULD (10%) -

CAN'T (100% NO WAY!!!)

GUESSES or PROBABILITIES ABOUT PRESENT SITUATIONS

For example:

I am waiting for Julie with another friend, David. I ask: 'Where is Julie?' David guesses:

She must be on the bus. (I'm almost sure this is a good guess) She could be lost.
She may be in the wrong room.
She can’t be at home. (I'm almost sure this isn't possible)

http://www.oup.com/elt/global/products/headway/intermediate/a_grammar/unit09/hwy_int_unit09_1/

GUESSES or PROBABILITIES ABOUT SITUATIONS HAPPENING NOW

For example:
I am waiting for Julie with another friend, David. I ask: Why hasn't Julie arrived? What is she doing?' David guesses:

She must be coming by bus. (I'm almost sure this is a good guess)
She could be working at her office.
She may be eating with her family.
She can’t be partying with other friends! (I'm almost sure this isn't possible)

GUESSES or PROBABILITIES ABOUT PAST SITUATIONS

For example:

You: Where was Julie last night? David guesses:

She must have forgotten about our date.
She might have worked late.
She could have taken the wrong bus.
She may have felt ill.
She can’t have stayed at home.

http://www.oup.com/elt/global/products/headway/intermediate/a_grammar/unit09/hwy_int_unit09_2/

Exercises:
http://www.englishpage.com/modals/interactivemodal1.htm
http://www.englishpage.com/modals/interactivemodal4.htm
http://www.englishpage.com/modals/interactivemodal7.htm

TASK

Your English Teacher hasn't come to give classes this week. You went to ask in the coordination but they don't know any information.

What might have happened to her?
Where might she be?
What might she be doing?

"used to / be used to/ get used to"

USED TO...

To talk about a past habit.

Structure:

Affirmative: Subject + used to + verb (simple form) + complement.
Negative: Subject + didn't + use to + verb (simple form) + complement.
Question: Wh- + did + subject + use to + verb (simple form) +complement.

Example:

A: What cartoons did you use to watch when you were a child?
B: I used to watch Sailor Moon and Dragon Ball.
A: Oh! I also used to watch Sailor Moon, but I didn't use to watch Dragon Ball.

Practise "used to" in its affirmative, negative and interrogative form.
http://www.englishgrammarsecrets.com/usedto/exercise1.swf
http://www.angelfire.com/wi3/englishcorner/grammar/Interactive/usedto02.html

BE USED TO + (verb+ing)

To talk about a familiar situation.
(The situation can be expressed in past, present or future conjugate verb "be")

Structure:
Affirmative: Subject + (verb "be" in any tense: was, am, will be, have to be...)+ used to+ verb (with -ing)+ complement.
Negative: Subject + (verb "be" in any tense in negative form: wasn't, arent', won't be)+ used to+ verb (with -ing)+ complement.
Question: (auxiliar of the verb "be" in any tense: was, were, is, are) + subject + used to + verb (with -ing) +complement.

Example:

I live in the city and sadly people aren't used to driving carefully they are used to driving as crazy guys!

A: When I lived in japan I was used to eating fish for breakfast but I wasn't used to kissing people to say 'Hello'.
B: Were you used to taking off your shoes every time you get it a house?


Practise used to vs. be used to:
http://www.smic.be/smic5022/used%20to.htm
http://brasyl.co.uk/e-mesh/members/learnerscentre/driving/grammar_use1a.html

GET USED TO+ (verb+ing)

To talk about a strange or unusual situation that is in progress to become easier (The situation can be expressed in past, present or future, conjugate verb "get")

Structure:
Affirmative: Subject + (verb "get" in any tense: got, gets, will get, have to get...) + used to + verb (with -ing) + complement.
Negative: Subject + (verb "get" in any tense in negative form: didn't get, doesn't get, won't get)+ used to+ verb (with -ing)+ complement.
Question: (auxiliar of the verb "get" in any tense: did, do, will) + subject + used to + verb (with -ing) +complement.

Example:

A: I have moved to the city and now I'm getting used to commuting by public transport.
B:Oh, I see. Did you get used to going to your new school?
A: Well, at first it was hard but now I got used to it.

Practise used to / be used to/ get used to...

http://www.usingenglish.com/quizzes/115.html
http://www.usingenglish.com/quizzes/326.html
http://www.learn-english-today.com/lessons/lesson_contents/used-to_to-be-used-to_ex..htm