请哥哥姐姐们帮帮忙！有8个要翻译的句子！谢谢！

1.直到昨天下午李先生才跟他兄弟讨论了我的建议
Mr. Li didn't discuss my suggetions with his brother until yesterday afternoon.
2.汤姆过去一向认为，他在学习上花的时间越多，就会取得越好的成绩，但现在他已经认识到，情况并非如此。
Tom used to think that the more time he spent in studing , the better grades he will get, but now he knows that it is not as he thought.
3.众所周知，我们的许多问题至少部分地是由于没能交流思想而引起的。
As we all know, many problems of ours are due to, at least partially, the lack of communication
4.尽管困难重重，我们仍决心执行我们的计划。
Though the problems were many, we are still determined to carry out our plan.

5.工人们坚持要资方改善他们的工作条件，并且宣称如果他们的要求遭到拒绝，他们将举行罢工。
The workers insist on employers to improve their working conditions, and declared that if their request was refused, They would be on strike.
6.我把那些书寄给他已有一个多星期了，现在他应该已经收到。
I have sent him the books for more then one week , he should received them hy now.
7.大多数学生发现，亚里士多德的哲学思想比他们原先所想的要复杂的多。
Most of the students found out that Aristotle's phi