用法:
1 of or forming a cause; relating to cause and effect 原因的; 构成原因的; 因果关系的.

用法:
2 (grammar) expressing or indicating a cause 表示原因的:
`Because' is a causal conjunction. because一词是表示原因的连接词.

• individual(person)
• indoor(indoors)
• industrial(industrious)
• inedible(uneatable)
• inept(unapt)
• inflammable(inflammatory)
• ingenious(ingenuous)
• inhuman(inhumane)
• instead of(in place of)
• intelligent(intellectual)
• intend doing sth(intend to do sth)
• intent(intention)
• interested(interesting)
• interfere in(interfere with)
• into use(out of use)
• into(in to)
• invalid
• invaluable(valuable)
• ironer(ironist)
• it is all very well …， but(it is true that …， but)
• it is no use doing sth(it is no use to do sth)
• it is time (that)(it is high time)
• it(one)
• it(she)
• it(this)