i think it helps中的help为什么是helps而不是is helping?

i think it helps中的help为什么是helps而不是is helping? 分析下句子 I think it helps.it helps. I think it helps.I think it（）（）.句型转换 求分析“I think it helps” 是简单句还是复合句helps在这里是什么词性, he think do i can it I think it helps.中helps是宾语补足语吗我知道这句话是省略了that的宾语从句,即：It think that it helps.其中that it helps是宾语从句.那么,我可以把它看成helps是宾语it的补足语吗?类似I think it helpful.那 I wonder if he（） us,and I think if he（） us we’ll be able to complete the task ahead of time.A、helps; help B、will help; helps C、will help; will help D、helps; will help I love my classroom ,______mine is very quiet and I can finish my work hereI think it helps me____my studies He thinks it helps him a lot. I think ______ doing lots of listening practice helps a lot.A.thatB.thisC.it请问选哪个? I think it helps 和I afraid it isn't interesting这里的helps 是什么词性?第二句,it 的后面怎么就跟了be动词了呢?it 不是属于前面的句子吗? It really improves my speaking skills 还有这个It really improves my speaking skills 还有这个:I do that sometimes.I think it helps I think he can do it.否定句I ____think he ____ do it. I think he can do it himself.否定句 I think it's he‘s book .改正 he has never forgot it,i think.同义句转化 He ------(lend )it to me later,I think.动词填空 I think she can do it He think she can do it改为否定句 为什么