3句英语翻译

上还是个大都市，近年来已经发生了很大的变化。（go through）
Shanghai is a large city and it has gone through a lot of changes recent years.

努力学习，否则就跟不上时代的步伐（keep pace with）
Study hard,or you can't keep pace with the age.

人口过分的拥挤和繁忙的交通使人们对这个城市十分忧虑（concern）
Too crowded population and too busy traffic made people concern with the city very much.

Or a city, has in recent years, great changes have taken place. (Go through)

Study hard, otherwise it can not keep up the pace of the times (keep pace with)

The over-population and heavy traffic congestion so that the people of this city are very worried about (concern)

Shanghai,as a big city, has gone through a big change in recent years.
Study hardly,or you'll can't keep pace with the times.
People concern the city for the crowded people and the traffic jam.