(3)lack(或通常用be lacking in)常与抽象名词连用;当谈及物体和物质时,be short of比lack更常用。在这类句子中如用lack,就显得非常正式。
①They are so rich that they lack for nothing.
他们非常富裕,什么也不缺。
②There was a severe shortage of petroleum during the war.
战争期间石油严重短缺。
③The teacher said that the child lacked/was lacking in confidence.
老师说这孩子缺乏信心。
④We are short of sugar/apples.
我们缺少糖/苹果。即境活用单项填空
Though ________ money, he managed to start his own business.
A.lacked B.lacking of
C.lacking
D.lacked of
答案:C
7.switch n.开关;转换 vt.转换
①Which switch do I press to turn it off?
我按哪个开关能把它关了?
②He used to play tennis, but now he's switched to golf.
他过去常常打网球,但是现在改打高尔夫球了。
●用法拓展
(1)switch off把(电灯或电器)关掉,关上;不听;不理不睬
(2)switch to变换到
(3)switch on把开关打开;接通
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