同学你好，该知识点来自沪江网校《新概念英语1、2、3、4册连读【学霸班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~

如果有多个问题，请分开提问

task 活动，尝试

grasp 理解（力）；领会
These complex formulae are beyond the grasp of the average pupil.
这些复杂的公式是一般小学生不能理解的。

attend 随同；陪同
The President was attended by several members of his staff.
总统有几名幕僚随从。

late in life 晚年

effort费力的事情
mental effort精神上的费力，精神紧张

have got to是个词组，意思是“必须，不得不”，和have to的意思一样。

I think I have got to stop or I might turn into a machine.
我想我得停下来了，否则我就会变成一台机器。

祝同学学习进步~