2019届一轮复习人教版必修四Unit2Working the land单元学案(28页word版)
③__To__ my great regret, we have no much time left to discuss the problem.
高考小作文。
④(山东高考书面表达)我很遗憾地告诉你我不能在约定的时间和你去北京了。
__I_regret_to_tell_you_that_I_can't__ go to Beijing with you at appointed time.
4．focus n．焦点；中心vt.集中；聚焦
归纳拓展
(1)focus on/upon集中(注意力、精力等)于
focus one's attention/eyes/energy on...把注意力/目光/精力集中在……
focus...on...把……聚集在……上面
(2)adjust the focus调整焦点/焦距
in focus对准焦距
out of focus没对准焦距，模糊
the focus of attention/concern注意力/关注的焦点
巧学助记
多维训练
完成句子。
①(四川高考)If we find those materials interesting, we'll __focus_our_attention_on__ them for long.