be used for / as /by到底“怎样用”
【点击用法】
这三个短语的结构都是“be+ used+介词”,但它们的意义是不同的。
1. be used for意为“被用作……”,介词for表示用途,后面接名词或动名词,相当于“be used to do sth.”。
2. be used as意为“被用作……”,介词as表示“作为……”,后面常接名词。
3. be used by意为“被……使用”,介词by后面常接动作的执行者。
【情景例句】
The machine is used for cutting
things. 这台机器是用来切割东西的。
English is used as a foreign
language in
The car is used by my uncle. 我的叔步使用这辆轿车。
【学以致用】
Ⅰ. 用be
used for, be used as 或be used by填空。
1. Computer __ many people all
over the world.
2. The calculators
__ working out math problems.
3. The radio __ a tool in my
English study.
4. Stamps __ sending letters.
Ⅱ. 同义句转换。
5. Safety glasses are used for
protecting your eyes.
Safety glasses are used your eyes.
Key: 1.
is used by 2. are used
for 3. is
used as 4. are
used for 5. to protect