某个话题引起热议
①“...引起了广泛的讨论”可以说
Much has been written about...这个表达还可以改写成：Much has been talked / debated about...，替换"there is a widespread debate about..."或"...has been widely debated"。该句式一般用在观点类写作开头，用来引出主题。
如果想要换个角度，在"Much has been talked / debated about..."后面加上一个but, however等表示转折的词汇，为转折作铺垫。
Much has been debated about their negative effects. However, if children
get interested enough, their hobby might one day turn into a career.
还有跟"Much has been written / talked / debated about..."极为相似的表达：②A lot of / Much ink has been spilled on/over... (大多笔墨用来写...了)
③...become the most talked-about topic
如In recent years, a spurt of progress in technology made it possible that AI became the most talked-about topic among the public.
④The past few years have seen the topic of ... rush into the forefront of the news and other media
如Many people believe that a person should have the same rights as anyone else, regardless of their race, age, gender—or sexual orientation. When this discussion moves into the arena of same-sex marriage, however, those beliefs start to waver a bit. The past few years have seen the topic of same-sex marriage rush into the forefront of the news and other media.
⑤The debate about...is in the air.
(有关...的讨论正在进行中，人们正在讨论...。)
如The debate about what this means in America is in the air.
⑥...is a hot-button
( hot-button是一个固定搭配，指话题“热议的、重要的”，一般用来形容种族、性别、堕胎、核污染等重大而敏感的话题。如果我们用来形容考试作弊、小黄车乱摆乱放等一些比较接地气的话题，可以换成hotly-debated.)
topic that has sparked conversations on social media numerous times over the past few years.
⑦the subject of...is among the most discussed on blogs .
如
Same-sex marriage is a hot-button cultural topic that has sparked conversations on social media numerous times over the past few years. Since PEJ began monitoring social media at the beginning of 2009, there have been nine previous weeks when the subject was among the most discussed on blogs .
总结，表达...话题引发谈论的7个句型:
①Much has been written/talked / debated about...
②A lot of / Much ink has been spilled on/over...
③...become the most talked-about topic
④The past few years have seen the topic of ... rush into the forefront of the news and other media
⑤The debate about...is in the air.
⑥...is a hot-button/hotly-debated
topic that has sparked conversations on social media numerous times over the past few years.
⑦the subject of...is among the most discussed on blogs .
