[threatened后面加什么]threatened和threatening

1 famine“饥荒”应该是不可数名词，不应该加复数2 weaker“弱者”应该是可数名词，应该加复数weakers Pollution is as serious as famine，which have threatened the survival of helpless weakers or even caused。

1protect against表示“保护不使受到的损害或侵犯”时常用结构protectagainst来表示，但较大的事件如天灾多用against，小事件如冷气则用from2protect fromprotect的基本意思是“保护，保卫”，即保护某人。

although in this case I prefer quotagainstquot If you are going to protect a child who is being bullied or threatened，you will more likely choose quotprotect from，quot but I hesitate to generalize off the top of。

Threaten to do，威胁做某事，中间不加sb 而threat sb into doing威胁某人做某事。

及物动词后面可以直接加人或者是名词，不需要加介词了，例如play the piano，不及物动词才需要加介词然后加名词构成动宾关系，比如说look at sth看，search for 搜寻 不过及物动词也是可以加介词，这时候就有特殊的意思了，比如。

Winter was coming on and the hills threatened the surrounding villages with destruction， for heavy rain would not only wash away the soil but would cause serious floods as well逗号之后是由for引导的原因状语从句。

由后面名词的性质决定后面是复数名词，谓语动词用复数后面是不可数名词，谓语动词用单三形式 30 percent of reptiles，birds，and fish are currently threatened with extinction目前，30%的爬行动物鸟类和鱼类面临灭绝的。