练习材料：
L46-2: Do it yourself
Inevitably the repair job was not quite so simple. The mower firmly refused to mow, so I decided to dismantle it. The garden was soon littered with chunks of metal which had once made up a lawn mower. But I was extremely pleased with myself. I had traced the cause of the trouble. One of the links in the chain that drives the wheels had snapped. After buying a new chain I was faced with the insurmountable task of putting the confusing jigsaw puzzle together again. I was not surprised to find that machine still refused to work after I had reassembled it, for the simple reason that I was left with several curiously shaped bits of metal which did not seem to fit anywhere. I gave up in despair. The weeks passed and the grass grew. When my wife nagged me to do something about it, I told her that either I would have to buy a new mower or let the grass grow. Needless to say our house is now surrounded by a jungle. Buried somewhere in deep grass there is a rusting lawn mower which I have promised to repair one day.
任务配置：L0+L4
知识笔记：
dismantle v.拆开
be littered with sth＝be full of
snap v.断开
insurmountable adj.难以克服的
jigsaw n.线锯
nag v.唠叨
jungle n.丛林
练习感悟：
Never leave the things until tomorrow you can do today.
