1, add the im- prefix letter m before the root to form antonyms, for example:
Moral-immoral
Spots-perfect
Material-immaterial
Maturity is maturity and immaturity is immaturity.
Measurable measurable unmeasurable unmeasurable.
Mediation? Indirect-direct direct
Melodious-my melody is not attractive.
Intermediate indirect
Unforgettable-unforgettable.
(There are other situations, such as immigration)
2. add the letter m and com- before the root to form the meaning of common, joint total and all. , for example:
Command command
The measured values can be compared with ...
Mend revision recommendation
A measure of proportionality
Measure (time or speed) in minutes.
Appointment by the Mission Appointment Committee
Community sensitive community society
Communication, high frequency and multi-channel communication, communication
(There are other situations, such as business, business and ordinary)
3. Closed syllables ending in m with suffixes need to be written as mm, for example:
Swimming. Swimming.
clipping machine
Tommy. Tommy.
Crowded