这些动词均有“考虑、思考、估量”之意。
study : 普通用词，指对各方面考虑，在制订出计划或采取具体动作之前作认真检查。
- Scientists are studying photographs of the planet for signs of life.
科学家仔细察看行星照片，寻找生命迹象。 - He studied her face thoughtfully.
他一边端详她的脸，一边沉思。
consider : 既指一时的对某事的考虑，也指长时间的深入的思考。
- She considered her options.
她仔细考虑了自己的各种选择。 - a carefully considered response
经过仔细考虑的回复
ponder : 侧重仔细、深入、连续地考虑问题，以作出认真的估计和正确的抉择。
- She pondered over his words.
她反复琢磨他的话。 - They were left to ponder on the implications of the announcement.
他们被留下来琢磨这项宣告的含义。
weigh : 指作出决策前把问题的各个方面进行比较，权衡利害得失，取有利的方面。
- I weighed the benefits of the plan against the risks involved.
我认真权衡了这个计划的优点和有关的风险。 - She weighed up all the evidence.
她慎重地考虑了所有的证据。
contemplate : 通常指长时间思考某事，有时含无确定的实际目的。
- You're too young to be contemplating retirement.
你考虑退休还太年轻。 - For a time he contemplated a career as an army medical doctor..
有段时间，他考虑去当军医。
