文青说的很棒! 我也奉上小砖渣
501. It’s nothing that you should worry about.
507. I’m a musician and I often don’t have regular jobs.
508. I’m good at English and history, but I’m really awful at the natural sciences.
510. I know I’m being silly, but I’ll worry about her for the rest of my life.
可以采用升调, 听的人就知道句子还未讲完. 降调用于句末, 表示句子说完了.
升调还用在"yes/no"的问句中,例如: are you OK? Is this seat taken?