M6U4 Helping people around the world
Grammar and usage学案
第一部分：重点讲解：
1.but for (P56)
except for sb./sth.; without sb./sth. 要不是
I'd have crashed the car but for your warning.
2. if only (P56)
used when you want to say how doing sth. simple would make it possible to avoid sth. unpleasant: 要是…就好了,但愿高考资源网版权所有 ©2005-2009
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