Unit2 Mental and physical development
1、infant\toddler
infant
n 婴儿 a newborn infant新生人
infancy
n 婴儿期，幼年 Her youngest child died in infancy.
toddler
n （尤指处于学步期或刚学会薛楼的）幼童
child
n 儿童，小孩，儿子，女儿
2、阶段
stage
n 阶段；发展时期 Our marriage is going through a difficult stage at the moment.
phase
n （发展或变化的）阶段，时期 We're now entering the final phase of the project.
period
n 一段时间，时期 The study will be carried out over a six-month period.
3、成熟
mature
adj 成熟的 He's very mature for his age.
immature
adj 不成熟的 She's rather immature for her age, don't you think?
maturity
n （心智）成熟；成熟阶段；发育成熟 How long does it take for the chicks to grow to maturity?
4、表示否定的前词缀
in-
impossible\incomplete\incompletely\illegal\illegally\impossible\impossibly\irregular\irregularly
un-
unrealistic\unhappily\unscrew\unfairness\unfortunately
dis-
disagree\dishonest
over-
overweight
5、grow and grow up
grow能和植物连用：We could grow flowers and trees here；能和事物连用：The business is growing rapidly
grow up只能和人或者城市连用：The city grew up from a small group of houses near the river. grow up为不及物
growth n 成长；增多
fully-grown(full-grown) adj 成年的；发育完全的
6、记忆
remember
v 记得，记起，牢记 "Where did you park the car?" "I can't remember."
memorize
v 记住，熟记，背熟 When I was at school, we were required to memorize a poem every week.
reminisce
v 追忆，回忆，缅怀 My grandfather used to reminisce about his years in the navy.
bear/keep something in mind
记住 Bearing in mind how young she is, I thought she did really well.
remind
v 使记起；提醒 Could you remind Paul about dinner on Saturday?
reminder
n 通知单；使人想起...的东西
memory
n 记忆力，记住 a good/ bad memory
n 记起，回忆 I have vivid memories of that evening.
7、cognitive
adj 感知的，认知的，认识力的 Some of her cognitive functions have been impaired.
8、concept
n 原则，概念，观念，想法 It is very difficult to define the concept of beauty.
9、consequence
n （通常指不好的）结果，后果 Not making a will can have serious consequences for your children and other family members.
10、acquire、master
acquire
v 取得，学到 I seem to have acquired two copies of this book.
master
v 精通，掌握 to master a technique
11、transition
n 转变；过渡 The health-care system is in transition at the moment.
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