Unit 21

don / doff / dour / dole

don v.穿上 (to put on) / dän /

• Mark donned his hat and gloves before stepping out into the snowy night.

doff v. 脱下 (to take off or remove (a hat or a piece of clothing)) /dɒf/

• Kai doffed his hat and waved it gaily in the air as the Queen's coach drove past.

dour adj. 严肃的，阴郁的 (gloomy, sullen) /ˈdʊə/

• Our math teacher is a dour creature whose gloomy countenance ensures that every class a dreary affair.

dole n. 悲伤 (grief, sorrow) / dōl /

• When Nancy's cat died, her dole was so great that she cried for days on end.

impervious / imperious / impetuous / imperil / imperative

impervious adj. 不受影响的 (not bothered or affected by something) / ɪmˈpərviəs /

• In his movies, Bruce Lee always seems impervious to his enemies' blows.

imperious adj. 骄横的 (having or showing the proud and unpleasant attitude of someone who gives orders and expects other people to obey them) / ˌimˈpirēəs /

• The principal behaves imperiously towards her staff, often ordering the teachers around as if they were her servants.

impetuous adj. 鲁莽的，仓促的 (acting or done quickly and without thought) / ɪmˈpɛtʃ(u)əs /

• The couple made an impetuous decision to get married after knowing each other for only a few hours.

imperil v. 使处于危险 (to put (something or someone) in a dangerous situation) / ɪmˈpɛtʃ(u)əs /

• The captain was forced to hang Billy Budd because the boy's disrespect for authority imperiled the entire ship by challenging the social order.

imperative adj. 重要的 (very important) / əmˈperədiv /

• Our teacher insists that it is imperative that we do well on our exams because high marks will help us gain entry to better universities.