用所给动词的适当形式完成句子.(2) He isn't going to -------(do ) his homework after dinner .(2) He isn't going to -------(do ) his homework after dinner .He -------(visit) his friends.(3) We -----(have) a good time last week ..（1）------- -------- ----------in the pake .这道题填have a picnic对吗 尽量详解

2， He isn't going to do his homework after dinner .
He visits his friends.
3，We had a good time last week.
1，对是对，语法没问题，但构成的是一哥祈使句，有“建议”而非“陈述”的意思。

(2) He isn't going to do his homework after dinner .
be going to 表示将来时,其后的动词用动词原形.
He is visiting his friends.他正在拜访他的朋友们.
He visited his friends.他（曾经在过去的某一时间）拜访了他的朋友们.
(3) We had a good time last week .
last week 上个星期,所要表述的是过去的时间,故用过去式
（1) have a picnic in the pake .
可以,构成的是祈使句,最后最好加上please,使句子更加完整.