1．表示方位的介词
We walked across① the beach，through② the woods and finally came to③ the house which was under④the big tree marked in⑤ the map.After stepping into⑥ the house，we found a small black table，over⑦ which was a lamp.Then we looked around⑧，only to find nothing.My friend found something special—an empty box.Beneath⑨ it was a note saying，“Stand beside⑩ the window and look out of? it.” From? the window we saw another house beyond? a small hill.
[规则感悟] ①across指从较为平坦的表面穿过。②through指从立体的事物中间穿过。③to指“到某处，去某处”。④under在……下面，无接触面。⑤in在……里面。⑥into到……里面。⑦over在……正上方(无接触面)；on在……上面(有接触面)。⑧around在/向……周围。⑨beneath在……下面(有接触面)。⑩beside在……旁边。?out of向/在……外面。?from从……。?beyond 在/向……较远的一边，超出。
2．表示时间的介词
It happened on① a Saturday morning in② November,2021.My parents left home at③ 6∶00 am to meet my uncle at the airport and told me they would come back in② two hours.However，it wasn’t long before④ someone knocked at the door，and I looked through the peephole and saw a stranger.I quickly locked the door from the inside，and didn’t open it until⑤ my parents came back.During⑥ the two hours，the stranger always tried to tell me something but I wouldn’t listen to him.On seeing my parents，the stranger said，“I have been waiting out of the door for⑦ two hours since 6∶10 am.” Why had my uncle changed so much over⑧ the years?
[规则感悟] ①on指在具体的某一天。②in用在年/月/季节/世纪等大时间之前，或者指上/下午或晚上；也可用在表示一段时间的词之前，表示“多久之后”。③at用在几点钟或night/noon之前。④before在……之前。⑤until直到……时候。⑥during在……期间。⑦for表示延续一段时间。⑧over表示“在……期间”，表延续。
