请教英语达人：merely,simply,just,only to,nomorethan

1.merely 仅仅，只不过
We humans are merely the instruments of fate.（我们人类只不过是天命的工具。）
2.simply 简单地;仅仅；实在，非常
To put it simply, the new proposals mean that the average worker will be about 10% better paid.（简单地说, 新建议意味着一个普通工人的工资将增加10%。）
I have never met our new neighbours; I simply know them by sight.
我从未接触过我们的新邻居, 只见过面。
My brother's English pronunciation is simply terrible.（我兄弟的英语发音实在糟透了。）
3.just 正好；仅仅；刚才；勉强地；只好
The coat is just the right size. 这件上衣的大小正好合适。
He is just a little baby. 他只是个婴儿
I just saw your sister standing over there.我刚才看见你妹妹站在那边。
We have only just enough milk to last till Friday.我们现有的牛奶勉强可以维持到星期五。
The door just opens. 门只好开着。
4.only to 仅仅为了
Beethoven did not compose his celebrated symphonies only to delight his own ears. 贝多芬不是仅仅为了自己听了高兴，才创作出他著名的交响乐的。
5.no more than 只是
His knowledge of the subject is no more than fragmentary. 他对这门学科只是一知半解。
（merely,simply,just都作“仅仅”讲时，可以