1. 关于……人们有不同的观点。一些人认为……
There are different opinions among people as to ____ .Some people suggest that ____.
2. 俗话说（常言道）……，它是我们前辈的经历，但是，即使在今天，它在许多场合仍然适用。
There is an old saying______. It"s the experience of our forefathers，however，it is correct in many cases even today.
3. 现在，……，它们给我们的日常生活带来了许多危害。首先，……；其次，……。更为糟糕的是……。
