●案例探究
1.I’d like very much to come but I had an examination on Monday morning.
(NMET 2000春季)
解析：此题为五星级题。考查时态一致。had 改为have。动词的时态要与上下文的时态保持一致。根据全文时态，此句为一般现在时，所以had 应为have。
2.Now someone at home reads instead.
解析：此题为五星级题。考查代词上下文指代一致。someone 改为everyone或everybody。 本文意思是：既然电视机卖了，全家每个人都没法看了，现在都改成读书了。根据代词指代内容要与指代的意义上一致的原则，这里指代的是家里的每一个人即：everyone\\everybody。
3.A seeing-eye dog is a special dog that help blind people walk along the streets and doing many other things.
