請問how rich and green the moss is that clings to these old trees中的clings是名詞嗎?從屬句that後不可能跟直接跟動詞吧?

１．妳問問題，怎麼又不給整句話了！！！
２．這句話的整句是：

See how soft the dried leaves are under your feet and how rich and green the moss is that clings to these old trees. 

是＂阿志魔術師＂裡面，獅子回答稻草人的一句話．

３．這句話的意思是：
YOU See (how soft the dried leaves are under your feet) and (how rich and green the moss is that clings to these old trees). 

 (how soft the dried leaves are under your feet) 與
(how rich and green the moss is that clings to these old trees)

都是名詞子句在這裡當作See 的受詞．

４．how rich and green the moss is that clings to these old trees
是
how rich and green the moss that clings to these old trees is
的倒裝句．
that 是關代，指the moss
clings 是動詞．

５．整句話的意思是：
（你）看看那．．．與那依附在老樹們身上的青苔是多麼豐盛＋翠綠

Clings 是動詞，cling = 依付，加s因為the moss是單數

(A)--On rearranging the sentence, we've:---(that,) conjunction, introduces various kinds of clause----->so that;
eg:-The moss is (so) rich and green
(that)
it(=moss) clings(v) to these old trees
(B)--On rearranging into two separate sentences with the same meaning:-
 ----The moss is rich and green.
-----It clings to these old trees
-----eg:-The moss is rich and green
(that)clings to these old trees------(that) is an adverb modify verb (is in main clause); in the type that introducing an adverb clause of place; manner; degree; relation and conjunction Hence (that) can follow the verb (cling) in the subordinate adverb clause.

還是that是指那些青苔的意思嗎?謝謝!

此處不宜用mosses，只有當刻意表示不同群簇、不同種類或不同地點的moss時，才會用複數形，否則moss就是不可數名詞。

How rich and green the mosses are clinging to that old tree.