Did you see this film ? (某特定时间)
3、可表示反复性或习惯性,常与often, three times 等词连用
Ive watched him on TV several times.
4、终止性动词可用完成时,但不能和for, how long 等时间词连用,此时常用替换词
This film has begun
How long has this film been on?
begin borrow come die be on keep be here be dead
join buy leave
be in have be away
5、其它和现在完成时连用的词:just, in (within) the past (last) + 时间段;
对比:He has just fallen downstairs.
He fell downstairs just now.
6、特殊结构
①This is the first (most / only ) + n. + that-clause
This is the best film I have ever seen.
②Its + 时间段+ since-clause (从句用过去时)
Its two years since he died.
He has been dead for two years.
He died two years ago.
7、现在完成时与现在完成进行时
现在完成进行时强调动作延续到未来或仍在进行.
Ive written an article. (已完成)
Ive been writing an article. (还在写)
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