concentrate one's attention/eyes on/upon (doing) sth.集中注意力于(做)某事

　　concentrate/fix/focus one's attention/eyes on/upon (doing) sth.集中注意力于(做)某事

　　①How can I concentrate on my study with so much noise outside?

　　外面那么吵，我怎么能集中精力学习呢？

　　②We must concentrate our attention on improving education.

　　我们必须致力于改进教育工作。

　　③Every one concentrated/fixed/focused_his/her_attention/eyes_on_listening_to the teacher.

　　大家都集中注意力听老师讲课。

　　[名师点津]　与concentrate/fix/focus on意义相近的短语：

　　①be absorbed in　　　 全神贯注于；热衷于

　　②be lost in 陷入......，被......所吸引

　　③be buried in 埋头于；专心于

　　④be occupied in 忙于

　　⑤be devoted to 专心于，致力于，献身于

　　2．(教材P16)About 23,000,000,000 tonnes of carbon dioxide are released into the atmosphere every year.

　　每年大约有230亿吨的二氧化碳被排放到大气中。

　　release vt.释放，放开；免除，解除；解雇；发泄，宣泄；公布，发布

　　写出下列句中release的含义

　　①Now, many films aim to release at the same time around the world.发行，发布

　　②She burst into tears, releasing all her depressed emotions.发泄，宣泄

　　③He refused to release her arm.放开，松开

　　④He was released from the prison yesterday.释放

　　⑤It is said that he has already been released from duty.解除

　　[辨析比较]　relieve, release

relieve 着重指减轻或暂时解除(痛苦，负担等) release 指从根本上免除、解除 　　选用上述单词填空

⑥The drug relieved my toothache.