with的意义之一就是和。。。在一起。with these words, she went out.字面的意思是她的离开是和说这几个字是有时间重合点的。即话音刚落，转身就走。甚至一边说话一边就转身离开。通常说话时间很短暂，离开的动作还没有完成，一般理解为说完话，就。。。

With theses words she went out.With theses words

做什么状语？

解答：以上为介词短语作时间状语”相当于“after she said these words”或者after saying these words

With these words he shut the book and left the room. 
说着他就合上书走出房去.

With these words he left the room. 
他说完这些话便离开了房间.

The avenue is lined with lush green tress.with lush green tress

作什么状语？

解答：以上为介词短语：作方式状语。

 The main streets tend to be lined with sturdy trees planted before living memory. 
主要街道两旁成排粗壮大树已有上百年的历史.
The interior of the tank shall be lined with a special resin coating. 
热水炉容器内胆应该内衬特殊的树脂涂层.

be covered with 盖着，覆着

These seeds must be covered with a layer of earth. 
这些种子必须盖上一层泥土.
 Plants must be covered with a leaf-mould or similarly protected if frost threatens. 
如果霜冻来临，植物必须盖上腐叶土或用类似方法加以保护。
The structure can be covered with any kind of material. 
结构的外面可以覆盖任何种类的材料.
 Such places must be covered with heavy planks a criss - cross way. 
这些地方必须交叉铺厚木板.
The top side of the cockpit be covered with solar panels. 
驾驶舱的顶端放置了太阳能板.
 Beards must be covered with a beard net. 
胡须必须用须套保护.

介词with 用，使用(某种工具、物品或材料

Remove the meat with a fork and divide it among four plates..
用餐叉把肉叉走，分到4个盘里。
Pack the fruits and nuts into the jars and cover with brandy..
把水果和坚果放进罐子里，用白兰地酒浸泡。

伴着(声音，话语或手势);带着(表情)

(英文解释：You use with when indicating a sound or gesture that is made when something is done, or an expression that a person has on their face when they do something.)

With a sigh, she leant back and closed her eyes.

她叹了口气，身体向后倚靠，闭上了眼睛。
The front door closed with a crash behind him.

前门在他身后砰的一声关上了。
Her eyes stared into his with an expression of absolute honesty.

她凝视着他的眼睛，一脸诚恳。