4.I have been so occupied with work that I haven't had time for social activities.

我一直忙于学习，以至于没有时间去搞社交活动。 so ... that引导的结果状语从句。 The new library is so_well_equipped_that many citizens can go there to read and borrow books.

新的图书馆设备如此完善，以至于许多市民都可以去那里借阅图书。 　　

　　1．(教材P38)KEEP IT UP, XIE LEI

　　谢蕾，再接再厉

　　keep it up保持优秀成绩；继续干下去

　　keep up　　　　　　 坚持；维持；沿袭(风俗、传统等)

　　keep up with 赶上；不落在后面

　　①If he could keep it up, he would break the world record again.

　　如果能再接再厉，他将会再次打破世界纪录。

　　②Walking alone in the dark, the boy whistled to keep up his courage.

　　独自在黑暗中行走，男孩吹口哨壮胆。

　　③The modern world has been developing very fast. Every country must keep_up_with the time.

　　现代世界一直在飞快地发展。每个国家必须与时俱进。

　　2．(教材P38)Chinese student fitting in well

　　中国学生适应能力强

　　fit in相适应；相融合

　　(1)fit in with　　　　　　　 与......合得来；适应

　　(2)be fit for/to do sth. 适合做某事/胜任做某事

　　keep fit 保持健康

　　①He tried as much as he could to fit in but he could not because his mind was at home.(广东高考写作)

　　 他尽可能地去适应，但是做不到，因为他的心思在家里。

　　②She seldom communicates with others so she doesn't fit in with the class.

她很少与其他人交流，因此她没融入班级。