call up 和 call on的区别

call up打电话；召集,召唤
call on呼吁,约请,拜访
call on
1) 拜访
I'll call on him tomorrow.
明天我去拜访他.
2)号召；呼吁
3)邀请
call up:
(1) 打电话给
make a telephone call to
[例句]
Call me up tomorrow：my telephone number is 536291.
请明天打电话给我：我的电话号码是536291.
(2) 打电话
make a telephone call
[例句]
This morning someone called up from downtown and asked to see me at two o'clock.
今天早上有人从市里打电话来,要求在两点钟时来看我.
(3) 唤醒
arouse from sleep
[例句]
Shall I call you up at six tomorrow morning?
我明天早上六点钟叫醒你好吗?
The doctor was called up three times last night.
昨夜医生三次被从床上叫起来看病.

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