随着英语的普及，学好英语成了大学生最大的目标。为帮助大家轻松掌握专业知识，特提供以下资料：
近义词辨析?
roughly, approximately, about, around?
这组词都可表示在距离、时间、数量等方面“接近，大约”。?
roughly
意为“粗略，大约”，经常用来代替approximately或about。该词常含有随便、草率的意味。?
approximately
作“近于，接近”讲，表示精确程度非常接近某一标准，其误差极小甚至可忽略不计。?
about
作“大约”讲，可与approximately互相使用，但它不如前者那样强调对精确度的接近，但它后面的数或量都是明确的，没有“多少不定”的意思，如，不可说“about more than two”。?
around
意为“大约”，有时用于非正式场合，可以代替about或approximately?
Roughly speaking, I think we are heading for the depression.大体说来，我认为我们正走向萧条。?
It was approximately 100°F in the shade.在荫凉处温度约为华氏100度。?
There are about 60 people in the room.这房间里大约有60个人。?
He went to bed around midnight.他大约半夜才去睡觉。??
accumulate, amass?
这组词均含有“累积，积聚”的含义。?
accumulate
强调一点一点地连续积累，从而积聚成堆。?
amass
往往用于价高或量大的积聚。?
The accumulated evidence isn’t enough to ensure his conviction.已收集到的证据还不足以给他定罪。?
My savings are accumulating interest.我的储蓄不断生息。?
Fat will be accumulated in your body if you stop doing sports.如果你停止运动，脂肪就会积聚于体内。?
A speculator may try to amass great wealth.投机商会想方设法积聚钱财。??