mostly

mainly, chiefly, greatly, largely, mostly, primarily, principally, generally

这些副词均可表示“主要地、大量地”之意。
mainly: 指主要部分，突出在一系列事物中的相对重要性。
chiefly: 侧重某人或某物在众多的人或物中占主要和显著地位。
greatly: 通常强调程度的高。
largely: 着重范围或分量大大超过别的成分。
mostly: 强调数量占多半，近乎全部。
primarily: 侧重基本地，首要地。
principally: 侧重居首要地位。
generally: 通常强调普遍性。

副词 mostly:

1. in large part; mainly or chiefly
   同义词：largely, for the most part
2. usually; as a rule
   同义词：by and large, generally, more often than not

1. He reads the occasional book, but mostly just magazines.
   他偶尔也看书，但大多只看杂志。
2. Nowadays, houses are mostly lit by electricity.
   现在房屋大多用电照明。
3. Recycled materials are mostly of limited use.
   再生材料大多用途有限。
4. Jewelry and lace are mostly feminine belongings.
   珠宝和蕾丝大多是女性用品。
5. A piece of bread consisting mostly of the hard outer portion.
   硬面包片主要由外表硬皮构成的面包片
6. Most of the Americans use their cars mostly for their job.
   大多数美国人的汽车主要是用来上班的。
7. The men at the party were mostly fairly young.
   参加聚会的男子大都非常年轻。
8. The work is mostly done.
   这工作已基本完成。