concentrate(近十年出现29次)
v. to give all your attention to sth. and not think about anything else集中注意力，聚精会神
con-共同 centr-centre 中心 -ate动词后缀
(新人教-B1WU) I couldn’t concentrate onthe experiment.
(安徽)We ought to concentrate on teachingchildren something really useful.
concentrate on doing sth. 在（做）某事上集中注意力
Great concentration is needed to achieve this goal（目标）.
concentration n. 专心；专注
（2019全国3）They reflect（反射）a concentrated beam(束)of light onto the town’s central square.
concentrated adj. 集中的；密集的
单词练习：
（四川-改编）I can just __________ on reading for a short time and I will conquer(克服)this problem by spending more effort on __________________ practice. (concentrate)
（上海-改编）The fish are then forced up to the surface in a _________________ (concentrate) mass（团；堆）.
答案：1，concentrate; concentration 2, concentrated
