急：be made of , be made from , be made by , be made into 和 be made up of 的区别。

be made of 用……制成（物理变化，看得出原材料） 例如：be made of wood 由……制成
be made from 由……制成（化学变化，看不出原材料） 例如：The wine is made from grapes. 酒是用葡萄酿造的
be made by 由（人）制成 例如： The table was made by the carpenter. 这张桌子是木匠做的。
be made into 被制成 例如：The wood was made into desks. 木头被制成了课桌。
be made up of 由……组成 例如：Our class is made up of 45 students. 我们班由45名学生组成。
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be made from 由…所做成的 （一般看不出原材料）
如：The trunk seems to be made from camphorwood. 这个箱子象樟木做的。
be made of 用…造成 (一般可以看出原材料)
如：A boat must be made of buoyant material。 船一定要用有浮力的材料来做。
be made into 由…可以制成…
如：Grapes can be made into wine. 葡萄可以用来酿酒。
be made by 由…做成 （一般后面加主语）
如：The news must be made by journalists. 新闻必须由记者来撰写。
be made up of 由…组成
如：Plato conjectured each of these elements to be made up of a certain Platonic solid.
柏拉图推测每一种元素都是由某些理想立方体组成

be made of 用……制成的 例：书由纸做成的

be made from 从什么制成的（质发生变化） 例：酒由葡萄酿成的

be made by 用什么方法制的 例：油是靠榨制出来的

be made into 把.....制成什么 例：把铁炼成钢

be made up of 由......组成 例：笔由墨仓和笔杆连成的

转摘
1．be made into意思是“被制成”。如：
①In many parts of the world corn is made into powder.
在世界许多地方玉米被制成粉。
②We can make glass into different kinds of things.
我们可以把玻璃制成各种东西。
2. be made of原为be made out of常被省略。这一短语表示成品制成后，仍保留了原材料的形状，制作过程仅发生了物理变化。如：
③The desks and chairs are made of wood.
这些课桌都是木头制成的。
④The cloth is made of cotton.
这种布是用棉花制成的。
3. be made from表示制成的东西完全失去了原材料的外性和特性，原料在制作过程中发生了化学变化，从成品已无法辨认。如：
⑤Gas is made from coal.煤气由煤制成。
⑥This kind of wine is made from rice.
这种酒是米制成的。
4. be made up of是“由…组成”的意思。如：
⑦The article is made up of four parts.
这篇文章有四部分组成。
⑧The sports team is made up of twenty members.
这支运动队有20人组成。
【注】be made of，be made into和make…into…许多时候可互换使用。如：
⑨Bread is made of flour.
= F1our can be made into bread.
= We can make flour into bread.
= We can make bread (out) of flour.