grammar-I

invalidate:To weaken or destroy the force or authority of.
 使失去效力。

indirect speech: the past tense can be kept. (see michael swan: practical english usage)
idiom 查<<綜合英語成語詞典>> (福建人民出版社)
incorruptibility
impose 實施
inconceivable 難以實施的
indispensable 不可或缺的
in terms of
injured not euqal to wounded .eg.  He was wounded in the war. but injured in the accident. wounded is more serious.
imminent 迫在眉睫的
if: if you would excuse me. Ok因為 if clause有 條件句 PROTASIS和結論句PODOSIS
of the impressions that
insight can be count or uncount. count, it means good opinions.e.g full of insights. but uncount means the wisdom of looking things deeply.  eg. a man of great insight
indigenous people is the better word for natives
infectious = easily to infect
inquest聆訊
unimaginative is not equal to unimaginable. the first one means not creative. the second word means hard to accept
instance 要求
intransitive, not in'trasitive
incumbent: The holder of an office.
 任職者。
 例句： the incumbent mayor
  現任的市長。

inversion: 倒裝句的SUBJECT要係NOUN,不能是PRONOUN. eg. On the floor lay a cat. XOn the floor lay it.
indirect speech:如果仲未發生,咁可以用Will. eg. Mr Lee told me yesterday he will return the book to you in a week. 當然可以用WOULD. 但WILL比WOULD更肯定.
indirect speech中的NOW不一定要轉, 因為NOW可以解THEN.
inversion: 倒裝句用於兩個情況, 一係用-ve words開頭, eg. Never have I seen such thing. others: seldom, rarely, hardly, no sooner, in no circumstances. 一係用表示方向,位置的字眼, eg. here, there, up, down, inside, outside. eg. There stood the soldier. 但不可說There stood he.
-ics: 學科, 通常是單數. eg. Mathematics is his speciality. 但若有pronoun. 如his, the,etc, 咁就當複數.eg. his mathematics are poor.
split infinitive無問題. eg to really understand it.
inflict that kind of pain