作业帮英语语法问题：根据句意用适当形式填空1.I____(get)to know jim ten years ago.We were____(be)friends since then.2.It needs ______(clean)up.3.I____(send)him aa text message an hour ago,but he ______(not reply)yet.4.We are told _______ (n
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英语语法问题：根据句意用适当形式填空1.I____(get)to know jim ten years ago.We were____(be)friends since then.2.It needs ______(clean)up.3.I____(send)him aa text message an hour ago,but he ______(not reply)yet.4.We are told _______ (n
英语语法问题：根据句意用适当形式填空
1.I____(get)to know jim ten years ago.We were____(be)friends since then.
2.It needs ______(clean)up.
3.I____(send)him aa text message an hour ago,but he ______(not reply)yet.
4.We are told _______ (not throw)waste paper everywhere.It's our duty ________ (keep)our school clean and tidy.
5.Jim used to _____(spend)all his pocket money,but now he is used to _______ (save) some of it.
6.The science teacher said thatthe sun_______(rise)in the east and_______(set) in the west.
要写出分析过程、、
就是讲清楚语法结构之类的那种
英语语法问题：根据句意用适当形式填空1.I____(get)to know jim ten years ago.We were____(be)friends since then.2.It needs ______(clean)up.3.I____(send)him aa text message an hour ago,but he ______(not reply)yet.4.We are told _______ (n
1、got（ten years ago表示过去的点时间,是使用一般过去式的时间状语）
have been（后半句你题目错了,we后面的were是不应该存在的,这里用现在完成时,是因为since then,then表示的是一个过去的动作,就是前面的got,而since加一般过去式,主句用现在完成时.）
2、cleaning或者to be cleaned（这里need做动词,句意为它需要被清理,need做动词表被动时,doing和to be done 是一样的.）
3、sent（用法同第一句的got）
hasn't replied（yet一般用现在完成时）
4、not to throw（tell sb to do sth/tell sb not to do）
to keep（这个不知道该怎么说好,可以归类为it句型吧.it+be动词+adj./n.+to do）
5、spend（used to do过去常常做某事）
saving（be used to doing现在常常做某事.）
PS：另外,be used to do也有这个用法,只不过这个是use作为“使用”的意思时的被动语态,意为被用来做某事,具体跟上面两种意思上不搭尬,不过会拿来放在选择题里辨析.
6、rises
sets
（按照前面主句said是过去式,照理说从句应该也用过去式,不过这里太阳东升西落是自然定律,总归是这样不会变的所以用一般现在时.注意有时候题目会变成太阳西升东落,这时候就不能用rises和sets,而应该是rose和set了.）
1got have been
2cleaning
3sent hasn't reply
4not ti throw to keep
5spending save
6rise set