小升初网整理了2017年小升初英语语法大全，供同学们参考，希望能够帮助同学们提高学习成绩。
请看下面的题：
An awful accident _________， however， occur the other day.
A. does B. did C. has to D. had to
【分析】此题正确答案应选B，句末的 the other day 意为前几天，所以句子应 用过去时态，而选项D填进去不合题意，故选B。此句有两个难点：一是句中插有 however 一词，分散了 同学们的注意力；二是所填选项B为许多同学所不熟悉的强调用法。又如(答案均选B)：
1) Your mother _________， however， say that to us that day.
A. does B. did C. is doing D. was doing
2) Our math teacher _________， however， speak English well.
A. doing B. does C. is doing D. was doing