Question

助动词do后面是不是第一个动词要接原形还是所有动词都是原形？

Answer 1

当do作为助动词时，不论否定还是肯定，后面第一个动词都用原形。
如果助动词用表示强调语气时，那也一样，后面第一个动词都用原形。
例如：① Do you like skiing？
②He did come yesterday.

③I don't love you.

此外，还有一些词也有这个用法。如：can，must，shuld。

Answer 2

这话不正确,正确的应该是i
very
sorry
for
i
couldn't
reply
to
you
in
time.
在助动词后面跟的都是原形,只需助动词体现时态就可以了.^0^

Answer 3

只有第一个动词要原形

Answer 4

一般现在时中，如果使用了助动词do或者does，主要动词必须为动词原形，你的理解正确。
Do you walk to school every day.
He doesn't do his homework on Saturday.
Does she sing songs well?

Answer 5

助动词后面所有动词原型，但是like 后面还是加ing. 如：Did you wash your chothes and clean your room? 不只是一个动词。 例如:Does she like swming?