来自石红伟的问题
【before用作连词时、后接从句什么时候+doing、什么时候+过去分词1.LiLeioftensmilesatmebefore____(talk)tome.2.Mr.Smithcanbuyasmallpresentbefore____(invite)toaparty.写出答案、并说明】
before用作连词时、后接从句什么时候+doing、什么时候+过去分词
1.LiLeioftensmilesatmebefore____(talk)tome.
2.Mr.Smithcanbuyasmallpresentbefore____(invite)toaparty.
写出答案、并说明原因、讲解.(最好通俗易懂)
1回答
2020-06-11 20:29