OBJECTIVES

1.Prefixes 2.Reviewing modal verbs.

Prefixes: in-, il-, ir-, im-

• Another prefix meaning "not" or "the opposite of" is in-.However the spelling of this prefix often changes tomatch the first letter of the base word. This sometimesresults in a double letter.

• So, if we want to say the opposite of legal we say"illegal" instead of "inlegal" The pattern is like this: *Use il- before words starting with l. So not legible = illegible. *Use ir- before words starting with r. So not relevant = irrelevant *Use im- before words starting with m but also in front of words starting with p. So: not mature = immature not perfect = imperfect.

• Use in- before any other letter. So: not adequate = inadequate

• not capable =• incapable

not decent =indecent

• not offensive = inoffensive

• Exercise 1

• Exercise 2

Prefixes: in-, il-, ir-, im-

Adjectives and prefix- English

CERTAINTY

MUST / CAN’T + verb to express certainty in the future.

There must be a reason why teenagers feel asleep in the morning ( I’m almost sureThere is a reason)

He can’t be at school yet because he is only just left home (I’m almost sure he isn’t at school)

CERTAINTY

PROBABILITY

SHOULD / OUGHT TO + verb to express probability in the present or future This should be similar for teenagers.

She’s studied hard, so she ought to pass the exam.PROBABILITY

POSSIBILITY

MAY / MIGHT / COULD + verb to express possibility in the present or future.

Changes in teenagers hormones could be what makes them feel tired in the morning.

One reason for this difference might be playing computer games late at night.

Modal Exercise 1

ACTIVITY AT HOME

Goldilocks and the three bears: Part 1, Part 2, Part 3Exercise on the text “Chicago”Exercise on the text “Oxford”Irregular Verbs