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关于一般过去式的问题现在语法多了好多都忘了,特别是过去时比如;1.he said he palyed basketbal

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关于一般过去式的问题
现在语法多了好多都忘了,特别是过去时
比如;
1.he said he palyed basketball yesterday.
后面的play用不用过去式,为什么、
2.he wanted to show me his hat yesterday.
其中是want加ed还是show加ed,还是只是want加ED.为什么,和1句对比讲下
3.we came by several villages during the trip.
后面的during为何不用过去式?
4.she locked the door and left for the concert
后面的leave为什么要用过去式 ,和3的句对比讲下.
关于一般过去式的问题现在语法多了好多都忘了,特别是过去时比如;1.he said he palyed basketbal
1.he said he palyed basketball yesterday.
后面的play用过去式,前后时态要一致.
2.he wanted to show me his hat yesterday.
其中是want加ed.show不加ed,want to do sth 是句型.to 后加动词原形.
3.we came by several villages during the trip.
后面的during后的trip 是个名词.没有时态变化.只有动词有时态变化.
4.she locked the door and left for the concert
and 前后的时态要一致.所以都是一般过去时.