have an effect on对……有影响
come into effect生效
The medicine had an instant effect on me.
这药我吃了以后立竿见影。
熟词生义
o
常用含义v.去,走;(事情)进行,进展;linking verb变成,变为,变得(尤指朝坏的方面)
特别记忆
1.be on the go十分活跃;非常忙碌
eg.I’ve been on the go all day.
我一整天忙得马不停蹄。
2.n.(做某事的)尝试,一番努力
eg.Let me have a go.
让我试一下吧!
补偿练习
情态动词+have done
1.—You didn’t wait for Elizabeth last night,did you?
—Yes,but we________.She didn’t come at all.
A.don’t have to
B.needn’t have
C.need to
D.should have
解析 由后面“她根本没来”,可知此处应为“是的,但当时我们没有必要等她”,needn’t have为needn’t have waited for her的省略形式,意为“没有必要做某事,但事实上做了”。故选B。
2.I was lucky to have missed the early bus this morning,or I ________ have been involved in a terrible accident.
A.could
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