(That) this would hardly be necessary as the men were already under arrest.
不用多说了THAT引导主语从句
I wonder (if) human being are primarily altruistic or selfish.
不用多说了IF引导宾语从句
(As) I was looking for it,the innkeeper came in.
不用多说了AS引导时间状语从句
People are (not so) honest (as) they once were.
不用多说了NOT SO...AS引导同级比较从句
Child (as) he is,he knows how to help others.
不用多说了AS引导让步状语从句
(As soon as) he saw us,he picked up a long pipe which was covered with coins and opened one of the baskets.
不用多说了AS SOON AS 引导时间状语从句
The young man did(not) wake up (until) the bed had struck the ground.
不用多说了NOT ...UNTIL引导时间状语从句
