1.许多商人发财以后,将钱捐给慈善机构以此来帮助穷人.
这里的话,charity只是代表一个事物.
或者你可以想,难道那些发了达的有钱人就一定要捐钱给很多慈善机构,难道就不能认准一家.(方便理解
2.Water the flowers,or they will die.
条件状语从句跟祈使句之间的转换
eg.If you don't hurry up,you'll be late for school.
= Hurry up,or you'll be late for school.
否定句转换用or,表示转折.
If you work hard,you'll make progress sooner or later.
= Work hard,and you'll make progress sooner or later.
肯定句用and,表示顺承.
3.D.get
as soon as 接的句子中用一般现在时代替一般将来时.
用一般现在时代替一般将来时也在条件状语从句中常见.
eg.I will call you if I get there.