1. 一般现在时 结构：主语 + 谓语（ be, 行为动词）am, is, are是否需要用第三人称单数是否第三人称单数常用的标志词： every day, often…..1. She (be) a student.2. She (go) to school by bike every day.isgoes 2. 一般过去时 结构：主语 + 谓语（ be, 行为动词）was, were动词的过去式常用时间状语： yesterday, last week, two days ago….1. They (be) students two years ago.2. He (go) to the park yesterday.werewent 3. 现在进行时 结构： be+ doing （动词的 ing)am, is, are常用标志词： now, at this moment…1. Daming (play) basketball now.2. We (watch) TV at the moment.is playing are watching 4. 过去进行时 结构： be+ doing （动词的 ing ）was, were常用时间状语： at 6 o’clock yesterday, at this time last week…1. Linda (do) her homework at 11 o’clock yesterday morning. 2. Tom’s parents (do) the housework at this time last week.was doingwere doing 5. 一般将来时 结构： will+ do （动词原形）常用时间状语： tomorrow, in the future, in two days…She (go) to the supermarket tomorrow.will go 6. 现在完成时 结构： has/have done （动词的过去分词）常用标志词： already, just, ever, neveryet, before…1. Betty already (finish) her homework.2. Betty and Daming (read) this book before.hasfinishedhave read
