重点讲解：
1. allow sb. to do sth.
允许；容许；准许某人做某事；
eg. The children are not allowed to watch violent TV programmes.
儿童不准收看含暴力内容的电视节目。
eg. The Government will allow them to advertise on radio and television.
政府将准许他们在广播和电视上做广告。
2. ball-and-chain
束缚；带着脚镣手铐
eg. The steady accumulation of small debts was a ball and chain to his progress.
不断累积的小债务妨碍了他的发展不断累积的小债务妨碍了他的发展。
eg. Mr Frankin always referred to his wife as his ball and chain.
弗兰肯先生一直把妻子看作是自己的拖累。
3. get out of
摆脱；逃避
eg. She'll need luck to get out of a tight corner like that.
她要靠运气才能摆脱那样的困境。
eg. It's amazing what people will do to get out of paying taxes.
人们为逃税而做出的种种事情令人吃惊。