Help!英语大神看这里Asisknowntousall,firstimpressionplaysanimportantroleinourlife.[句子错误]本句语法不规范,请检查!So,itisconsiderateofthemtosmileatusallthetime介词错误]请检查isconsiderateof,介

Question

Help!英语大神看这里
As is known to us all,first impression plays an important role in our life.
[句子错误] 本句语法不规范,请检查!
So, it is considerate of them to smile at us all the time
介词错误] 请检查is considerate of,介词错误.
We should be grateful for what the have done.
 [句子错误] 本句语法不规范,请检查!

Answer 1

1,As it is known to us all,或What is known to us all is that ...
2,They are considerate to smile at us
3,We should be grateful for what we have done.