1.在那种书上浪费时间,太愚蠢.
It is foolish of me to waste time on this kind of book.
(句型：it is + 品质/个性形容词 + of sb.to do sth.)
2.这在我生活中似乎是件大事.
It seems to me that it is a great event(或 gigantic task) in my life.
（句型：it seem to sb.that ...）
3.她瞧不起和她一起工作的女办事员.
She looks down upon the woman clerk who works with her.
(习语:look down upon/on；后面用定语从句)
4.We must spare no efforts to do it.
我们必须不遗余力地去做这件事.
(spare no efforts：不遗余力,不惜工本）
5.I am always wondering why those people who have made much progress are never satisfied with themselves.
我一直对那些取得很大进步的人不知为什么总是对自己感到不满足觉得有些莫名其妙.
或者：我就纳了闷了为何那些取得很大进步的人总是对自己感到不满足.
1）句子分析
主句：I am always wondering 我一直都在纳闷
宾语从句：why those people are never satisfied with themselves.那些人为什么从来都对自己不满足
定语从句：who have made much progress 取得很大进步的（人）
2）用法解释：always 出现在进行时态中表示责备、不满、赞扬等感情.
