4個”制成“短語的差別be made of/ be made from

be made of

be made from
be made in
be made into

(1) be made of表示"由…制成", 一般指能夠看出原材料，或發生的是物理變化。

This table cloth is made of paper.這張桌布是由紙做的。

(2) be made from也表示"由…制成"，但一般指看不出原材料，或發生的是化學變化。

The lifeboat is made from some special material.這個救生艇是由某種特殊材料制成的。

(3) be made in指的是產地，意思為"于…制造"。

My mother likes to buy things which are made in China.

我媽媽喜歡買中國產的東西。

(4) be made into的意思為”被制成為…"。