直接引语转换为间接引语时人称代词转换规律 一从主 He said to Tom, I can help them. He said to Tom that he could help them. 二从宾 He said to her, You can help them. He told her that she could help th
1）代词及be动词 主格 I we you you she/he/it they 宾格 me us you you her/him/it them 代词所有格 my our your your her/his/its their 名词性代词 mine ours yours yours hers/his/its theirs be动词现在时 Am
用与不用冠词的差异 in hospital 住院/in the hospital 在医院里 go to sea 出海/go to the sea 去海边 on earth 究竟/on the earth 在地球上，在世上 in front of 在 (外部的)前面/in the front of 在 (内部的)前
