一道英语单词选择题,More and more people have got to know the importan

后面一句话是前面一句的表现,并且一般来说十个人里面六个会说英语,也有点出人意料的感觉,beleive it or not 其实是口语里常用的句子,其实是个省略的句子,完整的是(Whether you)believe it or not.因为对话的时候已经是和对方说了 所以前面的部分省略了,意思是”无论／不管 你相不相信”或者”信不信由你”
therefore有两种用法,一在整句中,一在分句中.therefore是副词,但有时具有连词作用.
一、整句中时一般不放句末,句首后要有逗号,句中1、按一般副词使用2、做插入语（这两个分得清吧）
eg.1、Therefore,we must learn English well.
2、They therefore can learn English well.
3、Many fast food restaurant ,therefore,have red furniture or walls.
二、用在分句中,即一个句子一部分表示原因一部分表示结果.
这时一般词前要用分号,其后用不用逗号无所谓.若第二个分句前是逗号或无符号,则要注意therefore是副词,和so不一样,要保持句子完整,应用and therefore.
eg.1、I had a headache;therefore I could not go to your party.
2、I was ill,and therefore could not come.
3、These birds are very beautiful and therefore liked by many people.
通常这话会出现在阅读理解里面,如果实在搞不明白,就记住吧,比较口语化,也比所以放在句中更地道些.
再问： 请教 I had a headache;therefore I could not go to your party还有中间用分号的用法？能否再举一个
再答： 这个只要是这一类型的都可以的，前面是原因，后面是结果
再问： 那第二个是否可以改成I was ill； therefore could not come
再答： 应该不可以，因为分号前面和后面也是一个完整的句子，即结构完整必须要主语，你这样的therefore后面没有主语了，你要么改成I was ill； therefore I could not come 要么改成I was ill，and therefore could not come。