大有小没
一般现在时的句子结构分为两种：一种为主语+is, am, are+表语，通常表状态或特征，如：I am a teacher.另一种为主语+实意动词的原型或单三形式+宾语（当主语为I, we, you, they或能转化成它们的单词后用动词原型，当主语为she,he,it或能转化成它们的单词后用动词单三）如：I go to school every day. She goes to school every day.一般过去时也分为两种：一：主语+was, were+表语，如：I was a student many years ago.二：主语+动词过去式+宾语,如：I went to the park yesterday.一般将来时构成为：一 主语+is,am,are+going to+动词原型+宾语 二：主语+will+动词原型+宾语，三：主语+shall+动词原型+宾语（主语为I,we时使用）现在进行时：主语+is,am,are+动词ing+宾语现在完成时：主语+have/has+动词过去分词+宾语。如She has lived here for 2 years. 过去进行时：主语+was/were+动词ing+宾语，过去完成时：主语+had+动词过去分词+宾语过去将来时：主语+would+动词原型+宾语。或主语+was/were+动词ing+宾语
