这句话不对~more than more不通.more是一个形容词,形容词是不能用来形容形容词的.
你可以写:
1.I hope there are more people taking part in this activity to keep healthy.
2.I hope many more people will take part in this activity to keep healthy.
3.I hope more than a thousands people will take part in this activity to keep healthy.
4.I hope lots and lots of people will take part in this activity to keep healthy.
5.I hope lots more people will take part in this activity to keep healthy.