that和those的特殊用法

that和those的特别用法* that可代表前面提到的名词，以避免重复：The oil output last year was much higher than that of 1990. 去年的石油产量比1990年高得多。His description did not answer to that of the thief. 小偷的模样和他所描述的不相符。* those可代表前面的复数名词，以避免重复：His stories are more interesting than those I told. 他的故事比我讲的有趣。My questions are similar to those you raised. 我的问题你提的差不多。* that还可代表前句所说的情况：We see him when he comes to town，but that isnt often.他进城时我们就见到他，不过他不常进城。Van Gogh succeeded in selling only one painting in his life time，and that to his brother.梵高一生只卖出一张画，这张画还是卖给他哥哥的。* that还可用于某些成语：a. that is这就是说：One solution would be to change the shape of the screen, that is, to make it wider.解决方法应该是去改变屏幕的形状，这就是说使屏幕更宽些。b. thats all就这些，如此而已：Just dont do it again, thats all. 只要以后别再这样做了，就这些。c. thats it你说对了：“You have no confidence?” “Thats it. Im no good.” “你没有信心？”“你说对了，我不行。”d. thats that情况就是这样：Hes gone and thats that. 他走了，情况就是这样。e. thats to say这就是说：That is to say, same time, same place? 那就是说，老时间，老地方啰？f. whats that你说什么，你什么：What? Whats that you say? 什么？你说什么？g. (Who)is that是谁：Do go and see who that is at the door.去看看门口是谁。