do/does
am/is/are
时间状语:every day/week/month/year,(表示频率的副词:always,usually,often,sometimes,seldom,regularly)
主语为第三人称单数(it/he/she),动词形式用do,当主语为第一,二人称(i/we/you)或第三人称复数时,主语形式用does
主语为可数n.复数/不可数n.时,动词的形式用does,当主语为可数n.单数时,动词的形式为do
补充用法:一般现在时可以表示客观事实和普遍真理,一般现在时可以表示人的性格,特征,能力。
被动语态:am/is/are done
did
was/were
时间状语:yesterday,the day before yesterday,-ago,last-,in+过去的时间
背诵不规则动词表
used to do过去常常做某事
be used to do...被用来做某事
be used to doing习惯于
只要所表达的时间与说话的”现在“形成对立就必须用一般过去时表达。
被动语态:were/was done
will /shell be
will /shell do(shall只用于第一人称)
时间状语:tomorrow,the day after tomorrow ,-later,next+week/year/weekend...,in+将来的时间,in the following--(在接下来的-)
结构:连词+主语+do/does,主语+will/shall do
if/provided/unless/as long as/so long as+连词+主语+do/does,主语+will/shall do
be going to将要做某事
be about to do ,when...正要做某事,这时...
be to do....是要做某事
被动语态:will/shell be done
would/should+do
would/should+be(should只用于第一人称)
was/were going to将要做某事
was/were about to do ,when...正要做某事,这时...
was/were to do....是要做某事
被动语态:would/should be done