Question

—How long have you been working as an assistant here?
—__________I finished middle school.

A．Ever since

B．Before

C．After

D．When

Answer 1

A

试题分析：词义辨析。A自从；B在…之前；C在…之后；D当…时；本题第一句的现在完成时说明所选之词必须能与现在完成时连用；只有ever since与现在完成时连用。句意：—她在这里做助手多久了？—自从我读完中学。根据句意说明A正确。
点评：连词词义的辨析也要根据上下文的语境和语义来进行辨析。同时也要注意同一个连词的不同意思的辨析。