mostly
单词辨析：
指范围或程度上占大半地。
This small country is largely located in the desert.
这个小国家大部分地区位于沙漠中。
Her success was largely due to luck.
她的成功主要靠运气。
指作为非常重要的成分但并非全部地。
Air consists chiefly of nitrogen.
空气主要由氮气组成。
Cattle feed chiefly on grass.
牛主要以草为食。
主要用于强化程度，不修饰形容词，通常用于动词或分词前。
the greatly increased risk
大大增加的风险
He was greatly hurt.
他深受伤害。
I was greatly moved by his kindness.
他的善良令我极为感动。
指数量等方面占多半。
The members of the party are mostly workers.
该党的成员大部分为工人。
The men at the party were mostly fairly young.
参加聚会的男子大都非常年轻。
We mostly go out on Saturdays.
我们星期六一般不在家。
相关例句：
Our long courtship had been conducted mostly by letter.
我俩长期的恋爱过程基本上靠的是书信。
Students 'interests are mostly limited to the academic realm.
学生们的兴趣大多限于学术领域。
1.4 million council homes have been sold, mostly to sitting tenants.
已经出售了140万套廉租公房，大部分购买者都是房子的承租人。
The hard-line speech appears to be mostly for domestic consumption
强硬路线的讲话似乎主要是说给国内人听的。
They have mostly invested their money in expensive real estate.
他们已把钱主要投资到昂贵的房地产业了。
They are mostly advanced workers.
他们大多是先进工作者。