不加。“changeisagoodthing”这个短语中，“change”是主语，“is”是系动词，“agoodthing”是表语，因此，正确的语法结构是“changeisagoodthing”，不需要在“change”前面加“a”。
一定加a。“Changeiagoodthing”是一个固定表达，意思是改变是好事。在这个表达中，“a”是必须的，因为“thing”是一个单数可数名词，需要用不定冠词“a”或“an”来修饰。
Change is not always a good thing. It may force us out of tired habits and impose better ones upon us, but it can also be stressful, costly and even destructive. What’s important about change is how we anticipate it and react to it. Change can teach us to adapt and help us develop...
外部播放此歌曲> Eric Golub、Greg Fernandez Jr. - Change Is a Good Thing 专辑:Mind Body Soul: Vol. One (Runaway) 歌手:Eric GolubGreg Fernandez Jr. 还没有歌词哦
Paolo Di Candio came in as manager near the end of last seasonand has since overhauled...Hughes, Rob
A change in the public's view of female beauty. 出自-2016年12月阅读原文 People and homes are showing great change as more and more unique handcrafted items become available. 出自-2016年12月听力原文 What bothers me about the death of the wallet is the change it represents in our physical ...
to say anything in front of the crowds. I used to have bad grades because I didn’t like reading books. However, when I entered middle school, my hobbies changed most. Now I have realized the importance of reading. Just as the old saying g...
By 2025, it’s more likely that biometric tech will be verifying you for a driverless car you’ve called up on an app, with the ID process tailoring the in-car experience based on your usage history. Painting the town green The on-demand, driverless model will also be good for the pla...
Brian S. Lowery · 8 months ago 24 min business An activist investor on challenging the status quo Bill Ackman has made billions of dollars — and a name for himself — as an activist investor, buying up stock to push for change at companies. In this wide-ranging conversation with author...
syn: change, alter both mean to make a difference in the state or condition of a thing. To change is to make a material or radical difference or to substitute one thing for another of the same kind: to change a lock; to change one's plans. To alter is to make some partial change...