注意a-, in-, ( il-, im-, ir-), non-, un- 等前缀的使用.
“negative” prefixes表示否定意义的前缀
a- amoral与道德无关的, apolitical 不关心政治的、无政治意义的
dis- disloyal, disobey ,disclose,discredit,discourteous,disregard, disprove, dissimilar,
in- injustice, incorrect , inconsiderate, inconsistent, uracy,
il- illegal, illegalize,
ir- irresistible, irrational, irregular
im- immature, imbalance, impossible , impassive
non- noncontentious , non-classical, nonbusiness,
un- unwrap, unexpected, unfriendly, unfair, unendurable, unfavorable,unreasonable, unremarked
meanings of roots and prefixes
ex- out: express
post- after: postgraduate
ante- before: antecedent
over- beyond: overwork
mis- bad: misbehave
pre- before: prepare
over- excessive: overweight 超重,overflow溢出,overwork,
overleap越过,overrun超过,泛滥
sub- below: subheading 副标题,subdue征服,抑制,
subscribe
en- in: enclose
in- in: include
super- above superman
mal- wrongly: maltreat
ultra- extreme: ultra-conservative 极端保守
anti- against: anti-nuclear反核武器的, anti-government反政府的,
contra- against : contraflow 逆流,contradict反驳,否定,与。。抵触
counter- against: counterattack 反击,反攻, counteract抵消,中和,
co- with : cooperate ,
1. Words of the basic word stock can each be used alone, and at the same time can form new words with other roots and affixes, . foot is the father of football, footage and footprint. This demonstrates that one of the characteristics of the words of the basic stock is _____. ( A )
A. productivity B. polysemy
C. stability D. collocability
2. The formation of new words by converting words of one class to another class is called ______. ( D )
A. prefixation B. suffixation
C. acronymy D. conversion
3. People change word-meaning owing to various ______ motives: love, respect, courtesy, suspicion, pessimism, sarcasm, irony, contempt, hatred, etc. ( A )
A. psychological B. social
C. communicative D. lexical
4. The plural morpheme "-s" is pronounced as/s/in the following words EXCEPT ______. ( B )
A. packs B
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