現(xiàn)在完成時的時間標(biāo)志詞

一現(xiàn)時：sometimes=at
times
,every+時間段，次數(shù)+時間段（once
a
week，twice
a
day），never，often，usually，always=all
the
time
現(xiàn)行時：be
+v.ing
一過時：was，
this
morning
，just
now肯句：yes否句：no
一問句：am，is，are
do
does
was
特疑：wh開頭的（what
where
why
）how。
我是按順序回答的，有得標(biāo)志詞普遍懶得打了。不會可接著問。這都是初一的只是吧？

標(biāo)志詞有 already, yet, so far, as yet, lately ,recently,these days/weeks/years, until now, up to now, since+ 時間點, for+時間段,always, in the last/past( few years)。
例句it is my first time I have been here.
現(xiàn)在完成時的構(gòu)成是have 和has + v現(xiàn)在分詞構(gòu)成.

有：already yet so far since

現(xiàn)在完成時的構(gòu)成是have 和has + v現(xiàn)在分詞構(gòu)成.
標(biāo)志詞一般有 already, yet, so far, as yet, lately ,recently,these days/weeks/years, until now, up to now, since+ 時間點, for+時間段,always, in the last/past( few years)