[英文] 英文文法問題

are instructed 係(現在式)的被動語態

We are instructed ((被) 指示 / 命令/ 吩咐) 做.......

句子有分主動及被動的寫法, 一般做會用主動語氣寫法, 若想強調講便用被動式, 視乎你想用主動或被動寫
Perter instruct us. (主動)
We are instructed by Peter. (被動)

此外, 被動式有2種情況下, 不用寫(by XXX)
1. This road is build (by workers.)
- Road 一定係worker 起, understood 所以可以不寫(by workers.)
2. My watch was stolen (by whom).
- 由於不知誰偷, 所以不用寫 (by whom)

我順便列哂所有Passive Voice, 部份係(無)Passive Voice

simple present tense - (is/am/are) + PP
present continous tense - (is/am/are being) + PP
present perfect tense - (have/has been) + PP
present perfect continous tense - 無

simple past tense - (was/went) + PP
past continous tense - (was/went being) + PP
past perfect tense - (had been) + PP
past perfect continous tense - 無

future tense - (will/shall be) + PP
future continous tense - 無
future perfect tense - (will/shall have been) + PP
future perfect continous tense - 無

是的，這是被動式
We are instructed that
此時作'委託'用
即是他們被委託去 XXXXXX