replace vt.代替，取代；以……替换，更换，接替；把……放回原处
(教材原句P65)In sentence (a)，can we replace “in which” with “where” without changing the meaning?
在句子(a)中，我们能否用where替换 in which而不改变其意思？
[例] Nothing in the world could replace a mother's love and care to her children.
世界上没有什么东西能代替母亲对孩子的爱和关怀。
[知识拓展]
(1)replace A (with/by B) (用B)替换/接替/取代A
(2)replacement n. 更换，替换
(3)“代替”的其他表达法：
instead of 代替
in place of 顶替，代替
take sb.'s/sth.'s place＝take the place of sb./sth.
代替/替换某人/某物
[即学即练] 单句语法填空
①During his absence，his position was replaced with/by a newcomer.
②Sending WeChat messages has almost taken the place of written notice.
③His experience proved that no one could be in place of him.
