i didn't know how i could do things for myself before.从句中事态不受前面助动词影响吗

i didn't know how i could do things for myself before.从句中事态不受前面助动词影响吗
i didn't know how i could do things for myself before.从句中事态不受前面助动词影响吗

i didn't know how i could do things for myself before.从句中事态不受前面助动词影响吗
did'nt是助动词,它的作用只限于know,how引导的宾语从句不在其限定范围内