酷兔英语

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   本单元的语言点是前缀,在一些字的前面加上字首,这个字的意义就改变了。 举例来说,'excited'的前面加上'over'就变成overexcited,意思是'too much' 或 'too excited'。
Prefixes

You can make change the meaning of some words by adding prefixes (extra letters at the beginning of words).
For example, you can change the meaning of 'excited' to mean 'too much' or 'too excited' by adding 'over' to the beginning of it to make overexcited.

Too much, more than, many and do/be more than:

too much - over
excited (adj) - overexcited
spend (v) - overspend
confident (adj) - overconfident

more than - super
market (n) - supermarket
natural (adj, n) - supernatural
hero (n) - superhero

many - multi
layered (adj) - multilayered
tasking (n) - multitasking
purpose (n) - multi-purpose

do/be more than - out
run (v) - outrun
sell (v) - outsell
grow (v) – outgrow

Not and opposite:

not - non
verbal (adj) - non-verbal
smoking (adj) - non-smoking
returnable (adj)- non-returnable

opposite - in
competent (adj) - incompetent
convenient (adj) - inconvenient
expensive (adj) - inexpensive

opposite - im (before 'p')
possible (adj) - impossible
patient (adj) - impatient
perfect (adj) - imperfect

opposite - il (before 'l')
legal (adj) - illegal
legible (adj) - illegible
logical (adj) - illogical

opposite - ir (before 'r')
replaceable (adj) - irreplaceable
responsible (adj) - irresponsible
relevant (adj) - irrelivant


Using hyphens with prefixes:
Most words which are created with prefixes don't use hyphens. However, some prefixed words do use hyphens, for example, the prefixes co (co-operate), pro (pro-government) and non (non-starter).

Some words with prefixes are hyphenated and other words with the same prefix aren't. For example multilayered and multi-purpose There's no hard and fast rule why this is the case.




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