很大程度上的英文：
largely

参考例句：

The success of interpersonal communication depends, to a great extent, on one's verbal expression.
人际交往的成功与否，在很大的程度上取决于口才。

The histologic characteristics of the arterial wall are largely dependent upon the size of the vessel
动脉壁的组织学特点在很大程度上取决于血管的大小。

Materially, the family is quite successful.
这个家庭（在很大程度上）是十分美满的。

My plans are still very much in embryo.
我的计划在很大程度上仍在酝酿中。

The treatment of infertility is largely dependent on the ability of couples to pay.
对不孕不育的治疗很大程度上视乎夫妇的经济能力。

The beauty of Venice consists largely in the style of its ancient buildings.
威尼斯的美很大程度上在于它那古代建筑的风格。

The word processor has largely supplanted electric typewriters.
word处理程序已很大程度上取代了电动打字机

The culture of the people of the British as Isle was influenced by the culture of the people on the European mainland.
不列颠群岛的文化很大程度上受欧洲大陆的影响。

His failure is in great / large measure due to lack of confidence
他的失败在很大程度上是由於缺乏信心

He was to a great degree self-taught.
其成才很大程度上依赖于他的自学天赋。

largely是什么意思：
adv. 大部分地，主要地；大量地，大规模地；大致上，总体上

The shop was mobbed by a large crowd.
这家商店遭到一大群人的袭击。

This picture attracts a large audience.
这部电影吸引了很多观众。

The concert drew a large audience.
音乐会吸引了大量的观众。

The President is a man of large experience.
总统是一位经验丰富的人。

Do not write so large.
不要把字写得这么大。