1.The survey said that people who are addicted to the Internet have problems in life if they cannot get online regularly.
be addicted to沉迷于;有瘾
We think he will not be addicted to computer games any longer.
我们认为他不在会沉溺于电脑游戏 。
2.We found that [students addicted to the Internet] had significantly more trouble dealing with their day-to-day activities.
have trouble (in) doing sth,表示“做某事有困难”
He was having trouble hearing her.
他发现要听清楚她说话很困难 。