1 Success lies in hard-working,while laziness leads to failure.
2 没太看懂.如果“你仅”换成“不仅”的话翻译如下
Besides you,Tom got the chance of going abroad,too.
3 He came back,and what's more,he brought his family back with him.
4 We have to take firm and effective measures to protect the environment.
有很多译法,仅供参考.