下列每句话中有一处错误,请找出来并加以改正1 Jenny and li Ming get the t

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1 Jenny and li Ming get the train 这句话所要表达得意思为珍妮和李明上了车或者下了车.应改为Jenny and li Ming got 【on / off 】the train.已经乘了车或者已经下了车,故要用过去式.get on/off 为固定短语 意为 上车/下车.
2 This sweater is expensiver than that dress.
这句话所要表达的意思是这件毛衣比那条裙子要更贵些.应改为This sweater is more expensive than that dress.这里是将毛衣和裙子作比较,故要用比较级,而expensive 是多音节形容词,它的比较级必须要在其前面加上more（“更”）构成,不能再后面直接加上er,最高级也如此.希望对你有用欢迎追问和对我提问
======以下答案可供参考======
供参考答案1:
1 get 后面加on
get on 上车。
珍妮和李明上了火车
2 expensiver 改为 more expensive
expensive 不能直接加er
供参考答案2:
1.get on 吧..
2. more expensive
供参考答案3:
1 Jenny and li Ming get 【on / off 】the train.
2 This sweater is expensiver than that dress. -->This sweater is more expensive than that dress.
（expensive 是多音节形容词，其比较级需在前面加more构成，而不能直接在词尾加 -er 或 -r构成。）
供参考答案4:
在等比数列an中,a1+a6=33,a3*a4=32,,an供参考答案5:
get on 上（车）， get off ,下（车）
more expensive
供参考答案6:
Jenny and li Ming get on / off the train.
This sweater is more expensive than that dress
供参考答案7:
Jenny and li Ming get on the train.
This sweater is more expensive than that dress
.供参考答案8:
1. Jenny and li Ming get （on）the train.
2 This sweater is( expensiver 改为 more expensive )than that dress.