分类：教育/科学-升学入学-中考
问题：几个英语问题1happen能有过去时吗？Theywantedto 
1 hapn能有过去时吗？They wanted to see what was happened to them.吗2 The city has gone down to 23 centimetres.和The city has gone down by 23 centimetres.有区别吗3用May提问是否定是用can't和mustn't都行吗？那用Need提问肯定和否定用什么回答？4change和influence当改变讲时的区别谢谢
回答：1 hapn能有过去时,但是没有被动形式，所以They wanted to see what was happened to them.要把was去掉。2 有区别。前者是下沉到23厘米，后者是下沉了23厘米。1happen能有过去时，She didn't konw what happened.但是happen没有被动形式，不可以用 be happened2有区别。前者是下沉到23厘米，后者是下沉了23厘米。to 有表示目的和结果的作用，而by强调的是其后所跟的数。3用May提问应该用can't比较好，must 一般用肯定，在祈使句，或者感情较强烈的情况下用mustn't,应该是这样吧，其他情况做题时会遇到。4这两个词很容易区别，change 就是become different，纯粹的改变，天气的变化，人的变化。事情的变化等，还可以当改变某事物(At this restaurant they change the menu every day.)influence作改变时有影响力的意思，是改变别人的思想或行动，与change完全不同，（Television has a strong influence(n.) on people;She is easily influenced(v.) by her friends) 5.What's he;what's his job.