這兩個詞放在句首或句尾在用法上是一樣的,只是族在句首,就是兩個句子,放在句中,就是一個句子,也就是說是用if或unless將兩個句子連線成一個句子.
例:If it were not for your help,I would not have succeeded.要不是你的幫忙,我是不會成功的.
= I would not have succeeded if it were not for your help.
unless = if.not用來引導否定的條件句,也就是說用來代替否定的if從句.
例:If Max doesn"t come on time,we will leave without him.如果Max沒準時來,我們就不等他先走.
=Unless Max comes on time,we will leave without him.
not+unless=only...if 表示"如果...的話"
例:Venus won"t come unless Nancy does.Venus不會來,除非Nancy有來.
=Venus will not oonly come if Nancy does.
注意,這裡的only只是用來強調if ,與 if only(要是...就好了) 意思不同喔~
這兩個詞放在句首或句尾在用法上是一樣的,只是族在句首,就是兩個句子,放在句中,就是一個句子,也就是說是用if或unless將兩個句子連線成一個句子.
例:If it were not for your help,I would not have succeeded.要不是你的幫忙,我是不會成功的.
= I would not have succeeded if it were not for your help.
unless = if.not用來引導否定的條件句,也就是說用來代替否定的if從句.
例:If Max doesn"t come on time,we will leave without him.如果Max沒準時來,我們就不等他先走.
=Unless Max comes on time,we will leave without him.
not+unless=only...if 表示"如果...的話"
例:Venus won"t come unless Nancy does.Venus不會來,除非Nancy有來.
=Venus will not oonly come if Nancy does.
注意,這裡的only只是用來強調if ,與 if only(要是...就好了) 意思不同喔~