The country has already sent up three unmanned spacecraft ,the most recent (having been launched) at the end of last Mar
The country has already sent up three unmanned spacecraft ,the most recent (having been launched) at the end of last March.
括號(hào)內(nèi)have為什么要加ing
括號(hào)內(nèi)have為什么要加ing
英語人氣：294 ℃時(shí)間：2019-12-15 08:26:47
優(yōu)質(zhì)解答
這是 現(xiàn)在分詞完成形式的 獨(dú)立主格 結(jié)構(gòu) 所以 have要加ing. ???е????????????ing??????ing????have been launched ????ν??????????????о? ???????????????????and ??, and the most recent was launched at the end of last March.??? ????ing ????? ?????? ???????????????????????????????????ing??????????????????? ?????? ??? ?? ???????? ?? ????? ?????? ??????????????????????? ?? the most recent ??? ???????????? ?? ?? ?????? ???????? ????????? ?
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