angular2 ng-if

<td ><div class="td-li" >
                  <a (click)="open(i)" class="mdc-button ori-text" *ngIf="i.status===‘待发货‘">
                      发货
                  </a>
                  <a (click)="open(i)" class="mdc-button ori-text" *ngIf="i.status===‘已完成‘">

                  </a>
                  <a (click)="open(i)" class="mdc-button ori-text" *ngIf="i.status===‘已发货‘">
                      修改
                  </a>
              </div></td>