重点讲解：
1. be unaccounted for 不知下落的；未予说明的；
At least 300 civilians are unaccounted for after the bombing raids.
遭轰炸袭击之后，至少有300名平民下落不明;PMgN0Q^O!ybG^-2Z。
2. a total of 总数；总额；合计；
The companies have a total of 1,776 employees.
这些公司总计有 1,776 名员工r;3c+N@rN6x=]na。
3. take away 带走；
Two men claiming to be police officers called at the pastor's house and took him away.
两个自称是警察的人来到牧师家里，把他带走了N8j^+|QeuvfYiW(]~B。
4. be able to do sth. 可以…的，能够…的；
Parents will be able to discuss their child's progress with their teacher.
家长将可以和老师交流谈论子女的进步情况Sc(RUgV_r!gQVb6。