什么时候用过去分词什么时候用过去式什么时候用现在分词

我不懂,列个句子来看看,谢谢

过去分词用于完成时态:I have been here for 3 years.我来这已经3年了(been是be动词的过去分词)
过去式用于一般过去时态:I brought some juice here yesterday.昨天我带了一些果汁这儿。(brought是bring的过去式)
现在分词用于进行时态:He is doing his homework now.他正在做作业(doing是do的现在分词形式)
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第1个回答  2020-04-19
1.过去做过的用过去式,比如说:i
did
my
homework
last
night.
2.过去的过去用过去分词,不如说:he
told
us
that
he
had
finshed
his
homework.
3.过去对现在有影响用现在分词,比如说:he
has
finshed
his
homework
already.希望对你有帮助!!!
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