recent只有放句首才加ly吗?

应该理解为【recently作为副词修饰整个句子时可以放在句首的位置】.
延伸学习：
recency
n.崭新；最近
You can look at the Recency report to see how recently visitors have visited.
你可以看一下最近的报告,看看最近访客访问.
recent
adj.近来的；新近的
用作定语～+ n.
What is the most recent news?x09
最近有什么消息?
Ours is a recent acquaintance.x09
我们是最近才认识的.
In the light of recent discoveries,it may be necessary to revise our previous theory.x09
考虑到最近的发现,可能有必要修改我们的理论.
用作表语S+be+～
The photo is quite recent.x09
这张照片是新近拍的.
The change in management is quite recent.x09
管理上的变化是最近的事.
recently
adv.最近
He has recently learned English.x09
他最近在学英语.
The book was published as recently as last week.x09
这本书上周刚出版.
Recently they have laid an underground pipeline.最近他们铺设了一条地下管道.
Recently they have discovered a comet.最近他们发现了一颗彗星.
More recently they have reported a striking temperature.最近他们报道了异常的气温.
Recently they have received additional consideration.最近它们又倍加引起重视.