改错练习

1. The situation comedy has proved to a remarkably durable commercial television format.(1)____
译文：情景喜剧已经被证明是一种相当持久的商业电视形式。
2. Almanacs m simple form have been known from the invention of writing.(2)____
译文：简单形式的年鉴从书写发明以来就已经为人所知了。
3. It has not been determined how years sea turtles can live in their natural environment, but they will reach a very old age if left undisturbed by humans.(3)____
译文：还不确定海龟能在自然的环境中存活多少年，但如果不受人类干扰的话，它们可以活很久。
4. A patent gives inventors exclusive rights to their inventions for a fix period of time.(4)____
译文：专利给予发明者一段特定的时间独享他们的创造成果。
答案解析
1．分析：to∧→be。考查习语。“prove to be+名词”是固定结构，表示“证明是……”，此处缺be。
2．分析：from→since。考查词汇。since和from常易混淆。由have been known知道此句是现在完成时态，应想到时间状语用since引导，不能用from。
3．分析：how∧→many。考查引导词。how是副词，后面不能直接加名词，应改为how many years。
4．分析：fix→fixed。考查词性。fix是动词，这里要用形容词fixed修饰名词period。