do動詞的完成時態
英語中的完成時態有現在完成時。即助動詞have或has+動詞的過去分詞done.如:I have done the work. 完成時態還有過去完成時。就是had +done。通常稱為過去的過去。如The building had finished last year.還有將來完成時由will+have+done表示。如:By this time tomorrow，she will have arrived in Xuzhou.
英語中的完成時態有現在完成時。即助動詞have或has+動詞的過去分詞done.如:I have done the work. 完成時態還有過去完成時。就是had +done。通常稱為過去的過去。如The building had finished last year.還有將來完成時由will+have+done表示。如:By this time tomorrow，she will have arrived in Xuzhou.
